noun, used as a suffix, noun
Primarily a suffix used in compound words for types of headwear (e.g., 学帽, 制帽). Can also appear as a standalone noun in some contexts, but this is less common.
See also: 帽子
学帽をかぶる。
Wear a school cap.
この帽は父の形見です。
This hat is a memento of my father.