1a small recess for a domestic pigeon to nest in. 2each of a set of small open-fronted compartments in a workplace or other organization where letters or messages may be left for individuals. a compartment built into a desk for keeping documents in.
3a category, typically an overly restrictive one, to which someone or something is assigned:people identified me with a homely farmer’s wife and I could never escape that pigeonhole 1assign to a particular category, typically an overly restrictive one:I was pigeonholed as a ‘youth writer’
2put (a document) in a pigeonhole: he pigeonholed his charts and notes put aside for future consideration:she pigeonholed her worry about him