O, air hole, ambit, annular muscle, annulus, arc, arch, areola, armhole, association, aureole, band, bank, beat, begird, belt, belt in, bend, bend back, beset, bilge, blain, bleb, blister, blob, blowhole, boss, bow, braid, break, broken circuit, bubble, bulb, bulge, bulla, bullet-hole, bump, bunch, bunghole, burl, button, cahot, chaplet, chine, cincture, circle, circlet, circuit, circuital field, circumference, circus, closed circle, closed circuit, clump, coil, compass, complete circuit, condyle, conference, convex, corona, coronet, crab, cringle, crook, crown, curl, curve, cycle, dead circuit, deadeye, decurve, deflect, diadem, dip, discus, disk, dome, dowel, ear, embow, encincture, encircle, encompass, engird, enlace, ensphere, entwine, eternal return, eye, eyelet, fairy ring, feather, fishtail, flange, flap, flex, full circle, gall, galvanic circuit, garland, gasket, gird, girdle, glory, gnarl, grommet, ground loop
, guide, halo, handle, hill, hook, hoop, hot circuit, hump, hunch, incurvate, incurve, inflect, interknit, interlace, intertie, intertissue, intertwine, intertwist, interweave, intort, jog, joggle, keyhole, knit, knob, knot, knothole, knur, knurl, lace, lap, lasso, lateral circuit, leg, lip, live circuit, logical circle, loom, loophole, looplet, lump, magic circle, magnetic circuit, manhole, mat, microcircuit, mole, mountain, mousehole, multiple circuit, multiple series, net, nevus, noose, nub, nubbin, nubble, orbit, papilloma, path, peephole, peg, pigeonhole, pinhole, placket, placket hole, plait, pleach, plow, porpoise, porthole, printed circuit, pull out, pull up, punch-hole, push down, raddle, radius, recurve, reflect, reflex, retroflex, revolution, rib, ridge, ring, roll, rondelle, round, round trip, roundel, rounds, sag, saucer, series multiple, short, short circuit, shoulder, sideslip, skid, sphincter, spin, spine, spiracle, spiral, splice, staple, stud, stunt, style, swag, sweep, tab, tap, tie, tissue, tour, tubercle, tubercule, turn, twill, twine, twine around, twist, undulate, vault, vector field, vent, venthole, verruca, vesicle, vicious circle, wale, walk, wart, wattle, weave, web, welt, wheel, whorl, wind, wreath, wreathe, wreathe around, yaw, zone
circuit, roundabout way, digression, detour, circumbendibus, ambages, loop
, winding, zigzag, circuitous, indirect, roundabout, zigzag, backhanded, by a side wind, by an indirect course, in a roundabout way, from pillar to post.
curvature, curvity, curvation, incurvature, incurvity, incurvation, bend, flexure, flexion, flection, conflexure, crook, hook, bought, bending, deflection, deflexion, inflection, inflexion, concameration, arcuation, devexity, turn, deviation, detour, sweep, curl, curling, bough, recurvity, recurvation, sinuosity, kink, carve, arc, arch, arcade, vault, bow, crescent, half-moon, lunule, horseshoe, loop
, crane neck, parabola, hyperbola, helix, spiral, catenary, festoon, conchoid, cardioid, caustic, tracery, arched ceiling, arched roof, bay window, bow window, sine curve, spline, spline curve, spline function, obliquity, curved, curviform, curvilineal, curvilinear, devex, devious, recurved, recurvous, crump, bowed, vaulted, hooked, falciform, falcated, semicircular, crescentic, sinusoid, parabolic, paraboloid, luniform, lunular, semilunar, conchoidal, helical, double helical, spiral, kinky, cordiform, cordated, cardioid, heart shaped, bell shaped, boat shaped, crescent shaped, lens shaped, moon shaped, oar shaped, shield shaped, sickle shaped, tongue shaped, pear shaped, fig shaped, kidney-shaped, reniform, lentiform, lenticular, bow-legged, oblique, circular, aduncated, arclike, arcuate, arched, beaked, bicorn, bicornuous, bicornute, clypeate, clypeiform, cymbiform, embowed, galeiform, hamate, hamiform, hamous, hooked, linguiform, lingulate, lobiform, lunate, navicular, peltate, remiform, rhamphoid, rostrate, rostriferous, rostroid, scutate, scaphoid, uncate, unguiculate, unguiform.
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.