small bulb or bulb-shaped growth arising from the leaf axil or in the place of flowers
source: WordNet 3.0
A small or secondary bulb; hence, now almost exclusively: An aërial bulb or deciduous bud, produced in the leaf axils, as in the tiger lily, or relpacing the flowers, as in some onions, and capable, when separated, of propagating the plant; -- called also bulblet and brood bud.
