noun
Refers to meat that is red when raw, such as beef, lamb, or dark-fleshed fish like tuna. Often contrasted with 白身肉 (white meat).
健康のために、赤身肉を適度に食べるようにしている。
For my health, I try to eat red meat in moderation.
この料理には赤身肉の方が合う。
Red meat goes better with this dish.
The red flesh or lean part of meat/fish. 赤身肉 is the meat itself, while 赤身 can refer to the red part of a cut.
Compound of 赤身 (akami, 'red flesh') + 肉 (niku, 'meat'). The term is a straightforward description of meat that appears red when raw.