Leak1. (n.) A crack, crevice, fissure, or hole which admits water or other fluid, or lets it escape; as, a leak in a roof; a leak in a boat; a leak in a gas pipe.
2. (n.) The entrance or escape of a fluid through a crack, fissure, or other aperture; as, the leak gained on the ship's pumps.
3. (a.) Leaky.
4. (n.) To let water or other fluid in or out through a hole, crevice, etc.; as, the cask leaks; the roof leaks; the boat leaks.
5. (n.) To enter or escape, as a fluid, through a hole, crevice, etc. ; to pass gradually into, or out of, something; -- usually with in or out.
Thesaurus Entries
abysm, abyss, aperture, arroyo, babble, babbling, be indiscreet, be revealed, be unguarded, become known, betray, betray a confidence, betrayal, blab, blabber, blabbering, blabbing, blurt, blurt out, box canyon, breach, break, breakout, broaching, canyon, cavity, chap, chasm, check, chimney, chink, clearing, cleft, cleuch, clough, col, come out, come to naught, come to nothing, communication leak, coulee, couloir, crack, cranny, crevasse, crevice, cut, cwm, dead giveaway, defile, deliverance, delivery, dell, dike, discharge, disclose, disclosure, dissipate, distill, distillation, ditch, divulgation, divulge, divulgement, divulgence, divulging, donga, draw, dribble, drip, dripping, drippings, drop, emergence, escape, escapism, evasion, evulgation, excavation, extravasate, extrication, exudation, exude, fault, fenestra, fissure, fistula, flaw, flight, flume, fontanel, foramen, fracture, freeing, furrow, gap, gape, gash, gat, getaway, give away, giveaway, go to pot, go to seed, go to waste, gorge, groove, gulch, gulf, gully, hiatus, hole, hollow, incision, indiscretion, inform, inform on, inlet, interval, issuance, issue, jailbreak, joint, kloof, lacuna, laying open, leak away, leak out, leakage, leaking, let drop, let fall, let slip, letting out, liberation, make known, make public, moat, notch, nullah, obvious clue, ooze, oozing, opening, opening up, orifice, out, outlet, pass, passage, passageway, peach, pore, prisonbreak, puncture, rat, ravine, release, rent, rescue, reveal a secret, revelation, riddance, rift, rime, run to seed, run to waste, rupture, scissure, seam, seep, seepage, seeping, setting-free, sing, slit, slot, space, spill, spill the beans, split, squeal, stoma, stool, talk, tattle, tattle on, tear, tell on, tell secrets, tell tales, telltale, telltale sign, throwing open, transpire, trench, trickle, trill, uncorking, unstopping, unwitting disclosure, valley, vent, void, wadi, weep, yawn