Synonyms and related words :
Eustachian tube, Fallopian tube, aperture, avenue, blowhole, broaching, canal, cavity, channel, chasm, check, chute, clearing, cleft, con, crack, debouch, disclosure, door, duct, egress, emunctory, escape, estuary, examine, exhaust, exit, fenestra, fistula, floodgate, flume, fontanel, foramen, gap, gape, gat, go over, gulf, hiatus, hole, hollow, inlet, interval, intestines, lacuna, laying open, leak, loophole, meatus, opening, opening up, orifice, ostium, out, outcome, outfall, outgate, outgo, outlet, oviduct, passageway, perforation, peruse, pore over, port, read, sally port, salpinx, scrutinize, slot, sluice, space, spiracle, split, spout, stoma, study, tap, thoracic duct, throwing open, uncorking, unstopping, ureter, urethra, vagina, vas, vent, ventage, venthole, vessel, vomitory, way out, weir, yawn