2.STUPID/NOT INTELLIGENTAmerican EnglishAmE informal someone who is stupid 笨蛋,傻瓜
Examples from the Corpus
dumbbell• He had undressed forty-five-pound weight bars, stackedplates, and dumbbells on the floor.• Rigoulet, the strong man, strains at his dumbbell.• I raised it, as some sweating weight lifter might raise above his head his dumbbells of iron.• Slowly straighten the arm by lifting the dumbbellbackwards, keeping the upper arm still.• Dumb-bell curls should always involve rotation of the dumbbells.• He works out with dumbbells in the prisongym.