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.
This narrow-mouthed bottle is hard to clean.
topmouth gudgeon; Pseudorasbora parva
A small freshwater fish. Also called モツゴ in Japanese.
See also: モツゴ
Archaic female term for barracuda. Not used in modern Japanese.
The topmouth gudgeon is a small fish that lives in Japanese rivers and ponds.
In old documents, 口細 is recorded as a female term for barracuda.
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.