the lowest of the three petals forming the corolla of an orchid, usually larger than the other two petals, and often spurred
Origin of labellumModern Latin ; from L, diminutive of labrum, lip, akin to labium: see lip
- The median petal of an orchid flower, usually different in shape, size, or color from the two lateral petals; lip.
- A liplike part, such as the tip of the labium of certain flies, used for lapping up liquids.
Origin of labellumLatin, diminutive of labrum, lip; see leb- in Indo-European roots.
(plural labella or labellums)