What is pigeonhole at?
transitive verb. 1a : to place in or as if in the pigeonhole of a desk. b : to lay aside : shelve his reports continued to be pigeonholed and his advice not taken— Walter Mills. 2 : to assign to an often restrictive category : classify.
Is it pigeon hole or pigeonhole?
one of a series of small, open compartments, as in a desk, cabinet, or the like, used for filing or sorting papers, letters, etc. a hole or recess, or one of a series of recesses, for pigeons to nest in. Also called pigeon hole, white hole.