主しゅ菜さいしゅさいMeanings1nounmain dish; principal dishRefers 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てい食しょくの主しゅ菜さいは焼やき魚ざかなだった。The main dish of the set meal was grilled fish.