- aperture
- nopening, hole, eye, eyelet, eyehole, peephole, pinhole, puncture, perforation, interstice, pore, bore, airhole, spiracle; slit, crack, gash, vent, slot, rent, foramen; chink, cleft, cranny, rift, crevice, fissure, Archaic. scissure; gap, break, breach, chasm, gulf, embouchure, open space, hiation; outlet, inlet, mouth, orifice, window, porthole, oriel; entrance, gate, hatch, door, portal, trap door, wicket, postern, vomitory, vomitorium; mousehole, keyhole, pigeonhole.
A Note on the Style of the synonym finder. 2014.