a small recess for a domestic pigeon to nest in

each of a set of small open-fronted compartments in a workplace or other organization where letters or messages may be left for individuals

a 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

assign to a particular category, typically an overly restrictive one

I was pigeonholed as a ‘youth writer’

put (a document) in a pigeonhole

he pigeonholed his charts and notes