noun
caudal fin; tail fin
Refers to the tail fin of a fish. The reading おひれ is sometimes used, but おびれ is standard.
金魚の尾びれが美しい。
The goldfish's tail fin is beautiful.
この魚は尾びれが大きい。
This fish has a large tail fin.
Compound of 尾 (o, 'tail') + ひれ (hire, 'fin'). The initial 'h' of ひれ voices to 'b' due to rendaku, giving おびれ.