noun
scabbard mouth; sword sheath opening
Refers to the opening of a Japanese sword scabbard where the blade is inserted. A specialized term used in the context of swords and martial arts.
刀を鯉口に差し込む。
Insert the sword into the scabbard mouth.
noun
carp-mouth sleeve shirt
A style of shirt with wide, carp-mouth shaped sleeves, often associated with traditional Japanese clothing or workwear. The term is derived from the resemblance to a carp's mouth.
職人が鯉口シャツを着て作業している。
The craftsman is working wearing a carp-mouth sleeve shirt.
Compound of 鯉 (koi, 'carp') and 口 (kuchi, 'mouth'), referring to the shape resembling a carp's mouth. The reading こいぐち is standard; こいくち is a variant.