繁殖芽

Bulbil \Bulb"il\, n. [Dim. fr. bulb.]
1. (Bot.) A small or secondary bulb; hence, now almost
exclusively: An a["e]rial 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}.
[Webster 1913 Suppl.]

2. (Anat.) A small hollow bulb, such as an enlargement in a
small vessel or tube.
[Webster 1913 Suppl.]