noun
putting on armor and helmet; wearing armor
Dated term for donning armor, especially in historical or military contexts. Not used in modern everyday language.
戦の前に、武士は被甲して身を固めた。
Before battle, the samurai put on his armor and helmet to protect himself.
noun
Dated military term for a gas mask. Now replaced by ガスマスク or 防毒マスク.
旧日本軍では、被甲は毒ガスから兵士を守るために使われた。
In the former Japanese military, the gas mask was used to protect soldiers from poison gas.
noun
bullet-protective cover or jacket made of cupronickel
Dated military term for a protective cover or jacket made of cupronickel (白銅). Extremely rare and historical.
See also: 白銅
被甲は白銅製の防弾ジャケットを指す古い軍事用語である。
被甲 is an old military term for a bulletproof jacket made of cupronickel.
Compound of 被 (hi, 'cover' or 'put on') and 甲 (kou, 'armor' or 'helmet'). The exact historical derivation is uncertain, but the kanji directly reflect the meaning of donning protective gear.