armor chest; storage chest for armor and helmet
Historical term for a chest used to store a suit of armor (鎧) and a helmet (兜). Primarily encountered in historical or museum contexts.
An armor chest is on display at the museum.
Compound of 鎧 (yoroi, 'armor') and 櫃 (hitsu, 'chest'), with rendaku voicing of ひつ to びつ.