Как по Английски будет casillero

noun

A small lockable cupboard or compartment, typically as one of a number placed together for public use, e.g. in schools or railway stations.

Примеры использования:

We went to our lockers, conveniently close together, to get what we needed and whatnot.

noun

A small recess for a domestic pigeon to nest in.

Примеры использования:

It's fortunate that they set up those pigeonholes because some of the pigeons have come home to roo…

verb

Assign to a particular category, typically an overly restrictive one.

Примеры использования:

I was pigeonholed as a ‘youth writer’