The Collaborative International Dictionary
Bud \Bud\ (b[u^]d), n. [OE. budde; cf. D. bot, G. butze, butz, the core of a fruit, bud, LG. butte in hagebutte, hainbutte, a hip of the dog-rose, or OF. boton, F. bouton, bud, button, OF. boter to bud, push; all akin to E. beat. See Button.]
(Bot.) A small protuberance on the stem or branches of a plant, containing the rudiments of future leaves, flowers, or stems; an undeveloped branch or flower.
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(Biol.) A small protuberance on certain low forms of animals and vegetables which develops into a new organism, either free or attached. See Hydra.
Bud moth (Zo["o]l.), a lepidopterous insect of several species, which destroys the buds of fruit trees; esp. Tmetocera ocellana and Eccopsis malana on the apple tree.