Hub

• POS: Noun

CIDE DICTIONARY

Hub, n. [See 1st Hob.].

•  The central part, usually cylindrical, of a wheel; the nave. See Illust. of Axle box.  [1913 Webster]
•  The hilt of a weapon.  Halliwell.  [1913 Webster]
•  A rough protuberance or projecting obstruction; as, a hub in the road. [U.S.] See Hubby.  [1913 Webster]
•  A goal or mark at which quoits, etc., are cast.  [1913 Webster]
•  A hardened, engraved steel punch for impressing a device upon a die, used in coining, etc.  [1913 Webster]
•  A screw hob. See Hob, 3.  [1913 Webster]
•  A block for scotching a wheel.  [1913 Webster]
•  The central location within which activities tend to concentrate, or from which activities radiate outward; a focus of activity.  [PJC]
•  A large airport used as a central transfer station for an airline, permitting economic air transportation between remote locations by directing travellers through the hub, often changing planes at the hub, and thus keeping the seat occupancy rate on the airplanes high. The hub together with the feeder lines from remote locations constitute the so-called hub and spoke system of commercial air passenger transportation. A commercial airline may have more than one such hub.  [PJC]
•  The city of Boston, Massachusetts referred to locally by the nickname The Hub.  [PJC]

Hub plank (Highway Bridges), a horizontal guard plank along a truss at the height of a wagon-wheel hub. -- Up to the hub, as far as possible in embarrassment or difficulty, or in business, like a wheel sunk in mire; deeply involved. [Colloq.]

OXFORD DICTIONARY

Hub, n.
1 the central part of a wheel, rotating on or with the axle, and from which the spokes radiate.
2 a central point of interest, activity, etc.

Idiom

hub-cap a cover for the hub of a vehicle's wheel.

Etymology

16th c.: perh. = HOB(1)

THESAURUS

Hub

approach, arbor, asymptote, axis, axle, axle bar, axle shaft, axle spindle, axle-tree, bottleneck, center, center of action, center of gravity, centroid, centrum, chimney, chimney corner, collision course, concentralization, concentration, concourse, concurrence, confluence, conflux, congress, convergence, converging, core, crossing, dead center, distaff, epicenter, fender, fire screen, fireboard, fireguard, fireplace, fireside, flue, focal point, focalization, focus, fulcrum, funnel, gimbal, gudgeon, heart, hearth, hearthstone, hinge, hingle, hob, ingle, inglenook, ingleside, kernel, mandrel, marrow, medulla, meeting, metacenter, middle, mutual approach, narrowing gap, nave, navel, nerve, nub, nucleus, oarlock, omphalos, pin, pintle, pith, pivot, pole, radiant, radius, rowlock, seat, smokehole, spindle, spokes, storm center, swivel, tangent, trunnion, umbilicus

ROGET THESAURUS

Hub

Circularity

N circularity, roundness, rotundity, circle, circlet, ring, areola, hoop, roundlet, annulus, annulet, bracelet, armlet, ringlet, eye, loop, wheel, cycle, orb, orbit, rundle, zone, belt, cordon, band, contrate wheel, crown wheel, hub, nave, sash, girdle, cestus, cincture, baldric, fillet, fascia, wreath, garland, crown, corona, coronet, chaplet, snood, necklace, collar, noose, lasso, lassoo, ellipse, oval, ovule, ellipsoid, cycloid, epicycloid, epicycle, semicircle, quadrant, sextant, sector, sphere, round, rounded, circular, annular, orbicular, oval, ovate, elliptic, elliptical, egg-shaped, pear-shaped, cycloidal, spherical, I watched the little circles die.

Convexity

N convexity, prominence, projection, swelling, gibbosity, bilge, bulge, protuberance, protrusion, camber, cahot, thank-ye-ma'am, swell, intumescence, tumour, tumor, tubercle, tuberosity, excrescence, hump, hunch, bunch, boss, embossment, hub, hubble, tooth, knob, elbow, process, apophysis, condyle, bulb, node, nodule, nodosity, tongue, dorsum, bump, clump, sugar loaf, bow, mamelon, molar, belly, corporation, pot belly, gut, withers, back, shoulder, lip, flange, pimple, zit, wen, wheel, papula, pustule, pock, proud flesh, growth, sarcoma, caruncle, corn, wart, pappiloma, furuncle, polypus, fungus, fungosity, exostosis, bleb, blister, blain, boil, airbubble, blob, papule, verruca, papilla, nipple, teat, tit, titty, boob, knocker, pap, breast, dug, mammilla, proboscis, nose, neb, beak, snout, nozzle, schnoz, peg, button, stud, ridge, rib, jutty, trunnion, snag, cupola, dome, arch, balcony, eaves, pilaster, relief, relievo, cameo, bassorilievo, mezzorilevo, altorivievo, low relief, bas relief, high relief, hill, cape, promontory, mull, forehead, foreland, point of land, mole, jetty, hummock, ledge, spur, naze, ness, convex, prominent, protuberant, projecting, bossed, embossed, bossy, nodular, bunchy, clavate, clavated, claviform, hummocky, moutonne, mammiliform, papulous, papilose, hemispheric, bulbous, bowed, arched, bold, bellied, tuberous, tuberculous, tumous, cornute, odontoid, lentiform, lenticular, gibbous, club shaped, hubby, hubbly, knobby, papillose, saddle-shaped, selliform, subclavate, torose, ventricose, verrucose, salient, in relief, raised, repousse, bloated, (expanded).

Rotation

N rotation, revolution, spinning, gyration, turning about an axis, turning aound an axis, circulation, roll, circumrotation, circumvolution, circumgyration, volutation, circination, turbination, pirouette, convolution, verticity, whir, whirl, eddy, vortex, whirlpool, gurge, countercurrent, Maelstrom, Charybdis, Ixion, cyclone, tornado, whirlwind, dust devil, spin-out, axis, axis of rotation, swivel, pivot, pivot point, axle, spindle, pin, hinge, pole, arbor, bobbin, mandrel, axle shaft, gymbal, hub, hub of rotation, helix, helical motion, angular momentum, angular velocity, revolutions per minute, RPM, centrifugal force, surge, vertigo, dizzy round, coriolus force, carousel, merry-go-round, Ferris wheel, top, dreidel, teetotum, gyroscope, turntable, lazy suzan, screw, whirligig, rollingstone, water wheel, windmill, wheel, pulley wheel, roulette wheel, potter's wheel, pinwheel, gear, roller, flywheel, jack, caster, centrifuge, ultracentrifuge, bench centrifuge, refrigerated centrifuge, gas centrifuge, microfuge, drill, augur, oil rig, wagon wheel, wheel, tire, tyre, trochilics, whirling dervish, rotating, rotary, rotary, circumrotatory, trochilic, vertiginous, gyratory, vortical, vorticose, head over heels, round and round, like a horse in a mill.