1. (n.) A small compartment in a desk or case for the keeping of letters, documents, etc.; -- so called from the resemblance of a row of them to the compartments in a dovecote.

2. (v. t.) To place in the pigeonhole of a case or cabinet; hence, to put away; to lay aside indefinitely; as, to pigeonhole a letter or a report.

adjourn air hole alphabetize analyze armhole arrange assort bibliography blood blowhole book bracket branch break down bullet-hole bunghole calendar card catalog caste catalog catalogue raisonne categorize category clan class classified catalog classify codify constitute continue cringle cubby cubbyhole deadeye decree defer delay digest divide division doghouse drag out enact enact laws enroll enter enumerate estate extend eye eyelet file filibuster filing system finding list gasket get the floor grade grommet group grouping guide handlist hang fire hang up have the floor head heading hold off hold over hold up hole identify impanel index inventory itemize keep score keyhole kill kin knothole label lay aside lay away lay by lay over league legislate letter file level list lobby through logroll loop loophole manhole mousehole name niche ordain order pass peephole pigeonholes pinch pinhole place placket placket hole playhouse pocket porthole position post postpone predicament program prolong prorogate prorogue protract punch-hole push aside put aside put away put in force put in mothballs put off put on ice put through race railroad through range rank rate rating recess register reserve roll logs rubric schedule score section sept set set aside set by shelve shift off sideline sleep on slot sort spiracle stand over station status stave off stay store stow strain stratum stretch out subdivide subdivision subgroup suborder suspend table table the motion tabulate take a recess take the floor tally tap tier tight spot tight squeeze title type vent venthole veto waive yield the floor