1. (n.) A hollow place in the earth; an abyss; a deep chasm or basin,
2. (n.) That which swallows; the gullet.
3. (n.) That which swallows irretrievably; a whirlpool; a sucking eddy.
4. (n.) A portion of an ocean or sea extending into the land; a partially land-locked sea; as, the Gulf of Mexico.
5. (n.) A large deposit of ore in a lode.
Thesaurus Entries
Charybdis, Maelstrom, abysm, abyss, aperture, arm, armlet, arroyo, back stream, backflow, backwash, backwater, bay, bayou, belt, bight, boca, box canyon, breach, break, broaching, canyon, cave, cavity, chap, chasm, check, chimney, chink, clearing, cleft, cleuch, clough, col, coulee, couloir, countercurrent, counterflow, counterflux, cove, crack, cranny, crater, creek, crevasse, crevice, cut, cwm, deep, defile, dell, depth, dig, diggings, dike, disclosure, ditch, donga, draw, eddy, estuary, euripus, excavation, fault, fenestra, fiord, firth, fissure, fistula, fjord, flaw, flume, fontanel, foramen, fracture, frith, furrow, gap, gape, gash, gat, gorge, groove, gulch, gully, gurge, gut, harbor, hiatus, hole, hollow, incision, inlet, interval, joint, kloof, kyle, lacuna, laying open, leak, loch, lough, maelstrom, mine, moat, mouth, narrow, narrow seas, narrows, natural harbor, notch, nullah, opening, opening up, orifice, outlet, pass, passage, passageway, pit, pore, quarry, ravine, reach, refluence, reflux, regurgitation, rent, rift, rime, road, roads, roadstead, rupture, scissure, seam, separation, shaft, slit, slot, slough, sound, space, split, stoma, strait, straits, swirl, throwing open, trench, twirl, uncorking, unstopping, valley, void, vortex, wadi, well, whirl, whirlpool, workings, yawn, yawning abyss
