/ ˈblɒsəm; NAmE ˈblɑːs-/ noun , verb
■ noun
[ C , U ] a flower or a mass of flowers, especially on a fruit tree or bush :
cherry / orange / apple blossom
The trees are in blossom .
■ verb [ v ]
1.
( of a tree or bush ) to produce blossom
2.
blossom (into sth) to become more healthy, confident or successful :
She has visibly blossomed over the last few months.
Their friendship blossomed into love.
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WORD ORIGIN
Old English blōstm , blōstma (noun), blōstmian (verb), of Germanic origin; related to Dutch bloesem , also to bloom .