noun, noun which may take the genitive case particle 'no'
narrow-mouthed; having a small opening
Describes bottles, containers, or similar objects with a narrow mouth. Often used attributively with の.
この口細の瓶は洗いにくい。
This narrow-mouthed bottle is hard to clean.
noun
topmouth gudgeon; Pseudorasbora parva
A small freshwater fish. Also called モツゴ in Japanese.
See also: モツゴ
口細は日本の川や池に生息する小魚です。
The topmouth gudgeon is a small fish that lives in Japanese rivers and ponds.
noun
Archaic female term for barracuda. Not used in modern Japanese.
古い文献では、口細がバラクーダを指す女性語として記録されている。
In old documents, 口細 is recorded as a female term for barracuda.
モツゴ is the more common name for the topmouth gudgeon; 口細 is a less frequent synonym.
Compound of 口 (mouth) and 細 (narrow, thin). The fish name likely derives from the narrow mouth shape of the species. The archaic barracuda sense is of uncertain origin.