I. pi ‧ geon ‧ hole 1 /ˈpɪdʒənhəʊl, ˈpɪdʒɪnhəʊl $ -hoʊl/ BrE AmE noun [countable]
one of a set of small open boxes fixed to a wall. You leave letters, messages etc for particular people in the boxes.
II. pigeonhole 2 BrE AmE verb [transitive]
to unfairly consider a person, activity etc as belonging to a particular type or group SYN label
pigeonhole somebody/something as something
Patsy was pigeonholed as a Country and Western singer, but that’s too simple.