AM transmitter, FM transmitter, Klaxon, Mayday, RT transmitter, Roman candle, SOS, Texas tower, Very flare, aid to navigation, air-raid alarm, airport beacon, airway beacon, alarm, alarm bell, alarm clock, alarm signal, alarum, alert, all clear, amateur transmitter, amber light, anchor light, approach light, backfire, balefire, beacon fire, beacons, beam, bell, bell buoy, belvedere, blaze, bleachers, blinker, blinker light, blinking light, blue peter, bonfire, bridge, buoy, burglar alarm, burning ghat, buzzer, campfire, caution light, ceiling light, cheerful fire, combustion, conflagration, conning tower, corposant, cozy fire, crackling fire, crematory, crostarie, death fire, fan marker, fen fire, fiery cross, fire, fire alarm, fire bell, fire flag, five-minute gun, flame, flare, flare path, flare-up, flashing light, flashing point, flicker, flickering flame, fog bell, fog signal, fog whistle, foghorn, forest fire, fox fire, funeral pyre, fusee, gale warning, gallery, gazebo, glance, go light, gong buoy, grandstand, green light, heliograph, high sign, hooter, horn, hue and cry, hurricane warning, ignis fatuus, ignition, ingle, international alphabet flag, international numeral pennant, kick, lambent flame, leer, light, lighthouse, lightship, lookout, loophole, magnesium flare, marker, marker beacon, marshfire, microphone, navigation light, nod, note of alarm, nudge, observation post, observatory, occulting light, open fire, outlook, overlook, parachute flare, peanut gallery, peephole, pharos, pilot flag, poke, police whistle, prairie fire, pylon, pyre, quarantine flag, racon, radar beacon, radiator, radio beacon, radio range beacon, radio transmitter, radiomicrophone, radiosonde, raging fire, red flag, red light, ringside, ringside seat, rocket, sailing aid, sea of flames, semaphore, semaphore flag, semaphore telegraph, sheet of fire, sighthole, sign, signal, signal beacon, signal bell, signal fire, signal flag, signal flare, signal gong, signal gun, signal lamp, signal light, signal mast, signal of distress, signal post, signal rocket, signal shot, signal siren, signal tower, siren, skyrocket, small-craft warning, smudge fire, spar buoy, still alarm, stop light, storm cone, storm flag, storm warning, the nod, the wink, three-alarm fire, tocsin, top gallery, touch, tower, traffic light, traffic signal, transceiver, transmitter, two-alarm fire, two-minute gun, upside-down flag, watch fire, watchtower, whistle, white flag, wigwag, wigwag flag, wildfire, wind cone, wind indicator, wind sock, wink, witch fire, yellow flag
warning, early warning, caution, caveat, notice, premonition, premonishment, prediction, contraindication, lesson, dehortation, admonition, monition, alarm, handwriting on the wall, mene mene tekel upharsin, red flag, yellow flag, fog-signal, foghorn, siren, monitor, warning voice, Cassandra, signs of the times, Mother Cary's chickens, stormy petrel, bird of ill omen, gathering clouds, clouds in the horizon, death watch, watchtower, beacon, signal post, lighthouse, sentinel, sentry, watch, watchman, watch and ward, watchdog, bandog, housedog, patrol, patrolman, vedette, picket, bivouac, scout, spy, spial, undercover agent, mole, plainclothesman, advanced guard, rear guard, lookout, cautiousness, monitor, guard camera, radar, AWACS, spy satellite, spy-in-the- sky, U2 plane, spy plane, warning, premonitory, monitory, cautionary, admonitory, admonitive, sematic, warned, forewarned, on one's guard, in terrorem, Int, beware!, ware!, take care!, look out!, fore (golf), mind what you are about!, take care what you are about!, mind!, ne reveillez pas le chat qui dort, don't wake a sleeping cat, foenum habet in cornu, caveat actor, le silence du people est la legon des rois, verbum sat sapienti, a word to the wise is sufficient, un averti en vaut deux.
indication, symbolism, symbolization, semiology, semiotics, semeiology, semeiotics, Zeitgeist, characteristic, diagnostic, lineament, feature, trait, fingerprint, voiceprint, footprint, noseprint, cloven hoof, footfall, recognition (memory), diagnostic, divining rod, detector, sign, symbol, index, indice, indicator, point, pointer, exponent, note, token, symptom, dollar sign, dollar mark, type, figure, emblem, cipher, device, representation, epigraph, motto, posy, gesture, gesticulation, pantomime, wink, glance, leer, nod, shrug, beck, touch, nudge, dactylology, dactylonomy, freemasonry, telegraphy, chirology, byplay, dumb show, cue, hint, clue, clew, key, scent, signal, signal post, rocket, blue light, watch fire, watch tower, telegraph, semaphore, flagstaff, cresset, fiery cross, calumet, heliograph, guidon, headlight, mark, scratch, line, stroke, dash, score, stripe, streak, tick, dot, point, notch, nick, print, imprint, impress, impression, keyboard symbols, printing symbols, red letter, italics, sublineation, underlining, bold font, jotting, note, annotation, reference, blaze, cedilla, guillemets, hachure, quotation marks, ", double quotes, " ", parentheses, "( )", brackets, "", braces, "", left arrow, "<", right arrow, ">", forward slash, "/", backward slash, "\", exclamation point, "!", commercial at, "@", pound sign, "#", percent sign, "%", carat, "", ampersand, "&", asterisk, "*", hyphen, "-", dash, "-", "_", em dash, "--", plus sign, "+", equals sign, "=", question mark, "?", period, ", ", semicolon, ", ", colon, ":", comma, ", ", apostrophe, "'", single quote, "'", tilde, "~", badge, criterion, countercheck, countermark, countersign, counterfoil, duplicate, tally, label, ticket, billet, letter, counter, check, chip, chop, dib, totem, tessera, card, bill, witness, voucher, stamp, cacher, trade mark, Hall mark, signature, mark, autograph, autography, attestation, hand, hand writing, sign manual, cipher, seal, sigil, signet, hand and seal, paraph, brand, superscription, indorsement, endorsement, password, watchword, catchword, security card, pass, passkey, credentials, open sesame, timbrology, mot de passe, mot du guet, pass-parole, shibboleth, title, heading, docket, address card, visiting card, carte de visite, insignia, banner, banneret, bannerol, bandrol, flag, colors, streamer, standard, eagle, labarum, oriflamb, oriflamme, figurehead, ensign, pennon, pennant, pendant, burgee, blue Peter, jack, ancient, gonfalon, union jack, banderole, old glory, quarantine flag, vexillum, yellow-flag, yellow jack, tricolor, stars and stripes, bunting, heraldry, crest, coat of arms, arms, armorial bearings, hatchment, escutcheon, scutcheon, shield, supporters, livery, uniform, cockade, epaulet, chevron, garland, love knot, favor, beacon, cairn, post, staff, flagstaff, hand, pointer, vane, cock, weathercock, guidepost, handpost, fingerpost, directing post, signpost, pillars of Hercules, pharos, bale-fire, beacon-fire, l'etoile du Nord, landmark, seamark, lighthouse, balize, polestar, loadstar, lodestar, cynosure, guide, address, direction, name, sign, signboard, warning, omen, prefigurement, trace, record, warning &c, alarm, scepter, trophy, gauge, milestone, milepost, brand, fool's cap, check, telltale, test, mileage ticket, milliary, notification, advertisement, word of command, call, bugle call, trumpet call, bell, alarum, cry, battle cry, rallying cry, angelus, reveille, sacring bell, sanctus bell, exposition &c (explanation), proof, pattern, indicating, indicative, indicatory, denotative, connotative, diacritical, representative, typical, symbolic, pantomimic, pathognomonic, symptomatic, characteristic, demonstrative, diagnostic, exponential, emblematic, armorial, individual, known by, recognizable by, indicated, pointed, marked, denotable, indelible, in token of, symbolically, in dumb show, ecce signum, ex ungue leonem, ex pede Herculem, vide ut supra, vultus ariete fortior.