Noun

• S: (n) pigeonhole (a specific (often simplistic) category)
• S: (n) cubbyhole, pigeonhole (a small compartment)
• direct hypernym / inherited hypernym / sister term
• derivationally related form

Verb

• S: (v) pigeonhole (place into a small compartment)
• S: (v) pigeonhole, stereotype, stamp (treat or classify according to a mental stereotype) "I was stereotyped as a lazy Southern European"