柯林斯词典acorn /ˈeɪkɔːn/ (acorns) 1. N-COUNT An acorn is a pale oval nut that is the fruit of an oak tree. 橡实 返回 acorn剑桥词典an oval nut that grows on an oak tree and has an outer part shaped like a cup 橡实，橡子 返回 acorn