somebody doesn't have much meat on him/herBritish EnglishBrE, need some (more) meat on your bones American EnglishAmE informalTHIN PERSON used to say that someone looks very thin 某人身上没多少肉need some (more) meat on your bones• Matt, you need some more meat on your bones!
→ somebody doesn’t have much meat on him/her at meat(1)