ロースステーキMeanings1nounloin steakWasei-eigo from English 'roast steak', but refers specifically to a steak cut from the loin (e.g., sirloin or ribeye).wasei-eigo (Japanese-coined English), from roast steak今こん夜やはロースステーキを焼やくつもりだ。I'm going to grill a loin steak tonight.