- orifice
- nopening, hole, vent, outlet, venthole; window, hatch, hatchway, scuttle, Naut. booby hatch, gate, door, portal, Naut. scupper; drain, exhaust, spout, tap; gap, space, breach, break, check, leak, cleft, slot, slit, sissure, cranny, fissure, gash, rime, rift, crevice; mine, tunnel, cave, shaft, pit, hollow, cavity, cavern; entrance, inlet, passage, gat; aperture, ostiole, foraman, Anat., Zool. fenestra, spiracle, blowhole, Zool. alveolus; interstice, areola, pore, stoma, Anat. sinus; puncture, perforation, peephole, buttonhole, pinhole, eye, eyelet; bore, caliber; gape, yawn, lacuna, mouth, oral opening or cavity, embouchure, mouth-hole, Sl. yap, Sl. trap, Sl. bazoo.
A Note on the Style of the synonym finder. 2014.