noun
main dish; principal dish
Refers to the main course of a meal, typically a protein-based dish, as opposed to rice or side dishes. Often used in the context of set meals or Western-style dining.
See also: メインディッシュ
定食の主菜は焼き魚だった。
The main dish of the set meal was grilled fish.
このレストランでは主菜を選んでから副菜を選ぶ。
At this restaurant, you choose a main dish and then choose side dishes.