I. blos ‧ som 1 /ˈblɒs ə m $ ˈblɑː-/ BrE AmE noun
[ Language: Old English ; Origin: blostm ]
1 . [uncountable and countable] a flower or the flowers on a tree or bush:
pale pink blossoms
The cherry tree was covered in blossom.
2 . in (full) blossom with the flowers fully open
II. blossom 2 BrE AmE verb [intransitive]
1 . if trees blossom, they produce flowers:
The apple trees are just beginning to blossom.
2 . ( also blossom out ) to become happier, more beautiful, more successful etc:
Pete’s blossomed out in his new school.
blossom into
The idea blossomed into a successful mail order business.