pigeonhole

Imagine an old post office wall full of little boxes for letters. Each little box is a pigeonhole. From that picture, the word also came to mean putting a person or thing into one simple category, often in a way that feels too narrow.

We do this when we make quick judgments based on someone's job, appearance, or background instead of seeing the full person. You might say a musician was pigeonholed as a pop singer, even though they can do much more. The word can still mean an actual small storage space, but in everyday English it is most often used for this limiting kind of labeling.

As a noun, a pigeonhole is a small open compartment used for storing or sorting things such as letters, papers, or cards. The image comes from rows of little spaces, like the slots once used in post offices or desks.

As a verb, to pigeonhole someone or something means to put them into a fixed category, often too quickly or too simply. It suggests that a person, idea, or piece of work is being treated as if one label explains everything about it. For example, an actor may be pigeonholed as a comic performer and then struggle to be taken seriously in dramatic roles.

The word often carries a negative feeling because this kind of labeling can ignore complexity and limit opportunity. A student might be pigeonholed as "the quiet one," a writer as "just a romance author," or a product as useful for only one market when it could appeal to many. In these cases, the problem is not simple organization but the way the label becomes restrictive.

So the word moves between a literal sense and a figurative one: a real small compartment on the one hand, and a limiting category on the other. In modern everyday use, the figurative meaning is the one you will hear most often.