*nut/nʌt; nʌt/ n [C] 1 a large seed that you can eat, that usually grows in a hard brown shell 果仁，坚果: a cashew nut 腰果 2 a small piece of metal with a hole in the middle used for fastening things together 螺母，螺帽 3informal a crazy person 【非正式】 疯子 → see also 另见 NUTS