also: びんなが
noun
albacore; longfin tuna
A type of tuna (Thunnus alalunga) commonly used in sashimi and canned products.
ビンナガは刺身にすると美味しい。
Albacore is delicious as sashimi.
この缶詰はビンナガを使っています。
This canned product uses albacore.
マグロ is the general term for tuna, while ビンナガ refers specifically to albacore.
The name likely derives from 鬢 (bin, 'sideburns') and 長 (naga, 'long'), referring to the long pectoral fins characteristic of this species. The exact historical derivation is uncertain.