1. 芽；苞；花蕾 A bud is a small pointed lump that appears on a tree or plant and develops into a leaf or flower.
e.g. Rosanna's favourite time is early summer, just before the buds open. 羅莎娜最喜愛(ài)的季節是初夏，恰在花蕾綻放前。
2. 發(fā)芽；萌芽 When a tree or plant is budding, buds are appearing on it or are beginning to open.
e.g. The leaves were budding on the trees below. 下面的樹(shù)正在發(fā)芽。
3. 老友；伙計；老兄 Some men use bud as a way of addressing other men.
e.g. You heard what the boss said, bud. 你聽(tīng)見(jiàn)老板說(shuō)的話(huà)了，老兄。
4. see also: budding;cotton bud;taste bud
5. 在發(fā)芽；長(cháng)出花苞 When a tree or plant is in bud or has come into bud, it has buds on it.
e.g. The flowers are bronzy in bud and bright yellow when open. 這些花的花蕾是青銅色，開(kāi)放后呈明黃色。 e.g. ...almond trees that should come into bud soon. 很快就會(huì )開(kāi)花的杏樹(shù)
6. 把…消滅在萌芽狀態(tài)；防（患）于未然 If you nip something such as bad behaviour in the bud, you stop it before it can develop very far.
e.g. It is important to recognize jealousy and to nip it in the bud before it gets out of hand. 重要的是要甄辨出嫉妒情緒并盡早消除這種心理，以免其一發(fā)不可收拾。
bud英英釋義
noun
1. a partially opened flower
2. a swelling on a plant stem consisting of overlapping immature leaves or petals