pigeonhole

A small compartment or recess, as in a desk, for holding papers; a cubbyhole.

A specific, often oversimplified category.

The small hole or holes in a pigeon loft for nesting.

To place or file in a small compartment or recess.

To classify mentally; categorize.

To put aside and ignore; shelve.

To place or file away in a pigeonhole; hence, to lay aside for future consideration; hence, to lay aside and ignore or forget; “shelve”; treat with intentional neglect: as, to pigeonhole an application for an appointment; to pigeonhole a scheme.

One of the holes in a dove-cote or pigeon-house through which the birds pass in and out.

Hence A little compartment or division in a case for papers, a bureau, a desk, or the like.

One of a series of holes in an arch of a furnace through which the gases of combustion pass.