Dictionary 1. (n.) A hole or aperture in a door or lock, for receiving a key.2. (n.) A hole or excavation in beams intended to be joined together, to receive the key which fastens them. 3. (n.) a mortise for a key or cotter. Thesaurus air hole armhole blowhole bullet-hole bunghole cringle deadeye eye eyelet gasket grommet guide knothole loop loophole manhole mousehole peephole pigeonhole pinhole placket placket hole porthole punch-hole spiracle tap vent venthole |