Definitions from Wiktionary ( )

▸ noun:  One of an array of open compartments for housing pigeons in a dovecote or pigeon loft.
▸ noun:  (archaic) A hole or opening in a door or wall for a pigeon to pass through.
▸ noun:  (by extension)
▸ noun:  One of an array of open compartments in a desk, set of shelves, etc., used for sorting and/or storing letters, papers, or other items.
▸ noun:  One of an array of open compartments for receiving mail and other messages at a college, office, etc.
▸ noun:  A compartment or cubicle in a room or other place, especially one which is (excessively) small.
▸ noun:  A small opening for looking or passing things through.
▸ noun:  (nautical, archaic) An opening in a ship for passing equipment such as an oar or rigging through.
▸ noun:  (historical, chiefly in the plural, also attributive) A form of stocks with openings for restraining a person's hands or feet; also, one of the openings in the device.
▸ noun:  (obsolete, theater) A seat in the top row of the gallery of a theatre.
▸ noun:  (figurative)
▸ noun:  A notional category or class into which someone or something is placed.
▸ noun:  (typography, archaic) A space between two words that is too wide.
▸ verb:  To construct pigeonholes (noun sense 1 or sense 3.1) in (a place); also, to subdivide (a place) into pigeonholes.
▸ verb:  To put (letters, papers, or other items) into pigeonholes or small compartments; also, to arrange or sort (items) by putting into pigeonholes.
▸ verb:  (figurative)
▸ verb:  To arrange (items) for future reference or use.
▸ verb:  To put aside (advice, a proposal, or other matter) for future consideration instead of acting on it immediately; to shelve.
▸ verb:  To place (someone or something) into a notional category or class, especially in a way which makes unjustified assumptions or which is restrictive; to categorize, to classify, to label.

---

▸ Words similar to pigeonhole
▸ Usage examples for pigeonhole

▸ Idioms related to pigeonhole
▸ Wikipedia articles (New!)
▸ Popular adjectives describing pigeonhole
▸ Words that often appear near pigeonhole
▸ Rhymes of pigeonhole

▸ Invented words related to pigeonhole