/bʌn ||; bʌn/noun[C] 1 a small round sweet cake 圆形小糕点: a currant bun 葡萄干小圆糕点 ☞picture at cake 见 cake 插图
2 a small soft bread roll 小圆面包卷: a hamburger bun 汉堡包
3 hair fastened tightly into a round shape at the back of the head （盘在脑后的）圆髻: She wears her hair in a bun. 她梳圆髻。 ☞picture at hair 见 hair 插图