nutshell/-ʃel; -ʃɛl/ n1 hard covering around the kernel of a nut 坚果的外壳.2 (idm 习语) (put sth) in a nutshell (say sth) in very few words 用很少的言语（说明某事物） To put it in a nutshell, we're bankrupt. 简断截说, 我们破产了.
牛津英汉双解词典