/'blɒsəm; `blɑsəm/
n
1 [C] flower, esp of a fruit tree or flowering shrub 花（尤指果树或灌木的花）. Cf 参看 bloom.
2 [U] mass of flowers on a tree or shrub （树木上的）花丛, 花簇
*apple, cherry, etc blossom 苹果花、樱桃花等的花簇.
3 (idm 习语) in (full) blossom (esp of trees and shrubs) bearing blossom （尤指树木）正在开花
*The apple trees are in blossom. 苹果树正在开花.

v
1 [I] (of a tree or shrub) produce blossom （指树木）开花
*The cherry trees blossomed early this year. 樱桃树今年开花早.
2 [I, Ipr, Ip] ~ (out) (into sth) (fig 比喻)
(a) develop in a healthy or promising way; grow or develop (into sth); flourish 健康地成长; 长成或发展成（某事物）; 兴盛
* a blossoming friendship, partnership, etc 发展中的友谊、合作等
* Mozart blossomed (as a composer) very early in life. 莫扎特早在童年时已初露头角（成为作曲家）.
* She has blossomed (out) into a beautiful young woman. 她已亭亭玉立, 成了美丽的少女.
(b) become more lively 变得活跃
*He used to be painfully shy, but now he's started to blossom (out). 他以前极腼腆, 现在活泼起来了.