Crater :  (noun)
1: a bowl-shaped opening at the top of a volcano [syn: volcanic crater]
2: a faint constellation in the southern hemisphere near Hydra and Corvus [syn: Crater]
3: a bowl-shaped depression formed by the impact of a meteorite or bomb

abysm, abyss, alveolation, alveolus, antrum, armpit, basin, birthmark, blackhead, bleb, blemish, blister, bowl, bulla, cavity, chasm, check, cicatrix, comedo, concave, concavity, crack, craze, crevasse, crypt, cup, deep, defacement, defect, deformation, deformity, depression, depth, dip, disfiguration, disfigurement, distortion, fault, flaw, fold, follicle, freckle, funnel chest, gulf, hemangioma, hickey, hole, hollow, hollow shell, keloid, kink, lacuna, lentigo, milium, mole, needle scar, nevus, pimple, pit, pock, pocket, pockmark, port-wine mark, port-wine stain, punch bowl, pustule, rift, scab, scar, scoop, scratch, sebaceous cyst, shaft, shell, sink, sinus, socket, split, strawberry mark, sty, track, trough, twist, verruca, vesicle, vug, wale, warp, wart, weal, well, welt, wen, whitehead, yawning abyss,