noun Botany.

1.  The flower of a plant, especially of one producing an edible fruit.
2.  The state of flowering: The apple tree is in blossom.
verb (used without object)
3.  Botany . to produce or yield blossoms.
4.  To flourish; develop (often followed by into  or out  ): a writer of commercial jingles who blossomed out into an important composer.
5.  (Of a parachute) to open.