bud  
 noun uk/bʌd/ us/bʌd/
  (PLANT PART)       
  [ C ]芽;花蕾 
a small part of a plant, that develops into a flower or leaf
 in bud 发芽;含苞待放
covered with buds
  It was springtime and the fruit trees were in bud. 春天到了,果树发芽了。 
 At last, the days are getting warmer and longer and the trees are in bud.
 I see the blackcurrant bushes are in bud.
 The roses are not yet in bud.
 Make sure that you prune the plant when in bud and not in full flower.
 I cut back some perennials when they are in bud.
 I love this time of year when the trees are in bud and the birds are nesting.
   (MAN)     
  [ C ] US informal(用于称呼另一男士,尤用于表示不满时)老兄 
→  buddy informal 
   (DRUGS)     
 [ U ] slang大麻烟 
 cannabis  or  marijuana 
 bud       
verb [ I ] uk/bʌd/ us/bʌd/ -dd-
 发芽
to produce buds
  The unusually cold winter has caused many plants to bud late this year. 冬天异常寒冷,今年许多植物抽芽都晚了。