ləˈbeləm noun
( plural labella -lə)
Etymology: New Latin, from Latin, small lip, diminutive of labrum lip — more at lip
1. : the median membrane of the corolla of an orchid often differing markedly from the other two petals in shape and size, occasionally spurred, and while morphologically inner becoming by torsion of the ovary the outer or lower member
2.
a. : a prolongation of the labrum of various beetles and true bugs that covers the basal part of the rostrum
b. : either of a pair of sensitive fleshy lobes in two-winged flies that terminate the proboscis sheath and consist of the expanded end of the elongated labium