bun
/bʌn; bʌn/ n
1 small round sweet cake 小而圆的甜面包或点心
a currant bun 带葡萄乾的小圆面包. Cf 参看 roll1 2.
2 (esp woman's) hair twisted into a tight knot at the back of the head （尤指女子的）发髻
put, wear one's hair in a bun 把头发盘成发髻.
3 (idm 习语) have a `bun in the oven (infml joc 口, 谑) be pregnant 怀孕.