Definify.com
Webster 1913 Edition
Labellum
‖
La-bel′lum
(lȧ-bĕl′lŭm)
, Noun.
pl. L.
Labella
(lȧ-bĕl′lȧ)
, E. Labellums
(lȧ-bĕl′lŭmz)
. [L., dim. of
labrum
lip.] 1.
(Bot.)
The lower or apparently anterior petal of an orchidaceous flower, often of a very curious shape.
2.
(Zool.)
A small appendage beneath the upper lip or labrum of certain insects.