ETYM Old Eng. blosme, blostme, AS. blôsma, blôstma, blossom; akin to Dutch bloesem, Latin fios, and Eng. flower; from the root of Eng. blow to blossom. Related to Blow to blossom, and cf. Bloom a blossom.
1. The flower of a plant, or the essential organs of reproduction, with their appendages.
2. A blooming period or stage of development; something lovely that gives rich promise.
3. The color of a horse that has white hairs intermixed with sorrel and bay hairs.
To develop or come to a promising stage; SYN. blossom out, blossom forth, unfold.