arc, arch, bend, bill, bow, breve, claw, curve, foil, harp, hook, hooked, hoop, lash, line, pick, rib, scythe, slur, spline

antrorse, auger, billhook, black bead, catchweed, catclaw, circle, cleavers, clivers, cobble, contact, costa, crampon, crampoon, crescent, crocket, crookneck, curlew, cutlas, cutlass, decurved, eyebath, eyecup, eyelash, eye cup, falcate, fretsaw, gooseneck, goose grass, hawk nose, hockey, ibis, jigsaw, kirpan, lopper, moldboard, mouldboard, mudguard, musk rose, paisley, pickax, pickaxe, pipe vine, pruner, reap hook, recurved, retrorse, rocker, roundness, round shape, saber, sabre, sainfoin, sanfoin, scroll saw, sea mat, sea moss, shovel, sickle, sigmoid, sinuous, splash-guard, splash guard, tangent, throw stick, wood stork

aquiline, arrowworm, black medick, boomerang, brown creeper, calabash, chaetognath, cilium, cobblestone, contact lens, crocketed, crookneck squash, dress circle, esparcet, falciform, field hockey, hop clover, hydrofoil, impala, inside track, jackknife clam, khukuri, knife-handle, pruning hook, pruning knife, razor clam, reaping hook, recurvate, retroflex, retroflexed, scimitar, sickle-shaped, sicklepod, sinuate, spring cleavers, throwing stick, tree creeper, vibrio, vibrion, waterbuck, wiggly, wood-creeper, woodcreeper, woodhewer, wood ibis, yataghan

babiroussa, babirusa, babirussa, bryozoan, calabash pipe, cavalry sword, circumflex vein, cynically, deinonychus, holy clover, honeycreeper, incurvation, moss animal, nonesuch clover, phragmacone, phragmocone, polyzoan, runcinate leaf, scorpion shell, sickle feather, spirillaceae, summer crookneck, voluptuously, yellow trefoil

anorthopia, campylotropous, cassia tora, centrifugal force, centripetal force, cingulate gyrus, curlew sandpiper, curvilineal, curvilinear, gyrus cinguli, heliobacter, linoleum knife, rosa moschata, semicircular, winter crookneck squash

american creeper, arcuate artery, babyrousa babyrussa, european creeper, galium aparine, linoleum cutter, upholstery needle, vena circumflexa

aepyceros melampus, arabis canadensis, campylotropous ovule, certhia americana, family spirillaceae, genus heliobacter, senna obtusifolia, sinusoidal projection

arteria arcuata, calidris ferruginea, certhia familiaris, medicago lupulina, onobrychis viciaefolia

aristolochia durior, mycteria americana

arcuate artery of the kidney, aristolochia macrophylla, onobrychis viciifolia