From WordNet (r) 3.0 (2006):
flower
n 1: a plant cultivated for its blooms or blossoms
2: reproductive organ of angiosperm plants especially one having
showy or colorful parts [syn: flower, bloom, blossom]
3: the period of greatest prosperity or productivity [syn:
flower, prime, peak, heyday, bloom, blossom,
efflorescence, flush]
v 1: produce or yield flowers; "The cherry tree bloomed" [syn:
bloom, blossom, flower]