helmet; helmet liner
Rare term for a helmet or the inner lining of a helmet. Not in common modern use; likely encountered only in historical or specialized contexts.
古い文献に「中帽」という語が出てくるが、現代ではほとんど使われない。
The word 中帽 appears in old documents, but it is hardly used today.
The exact derivation is uncertain; the kanji 中 (inside/middle) and 帽 (hat/cap) suggest a head covering or inner lining.