labellum

 
Pronunciation: /ləˈbɛləm/

noun (plural labella /-lə/)

  • 1 Entomology each of a pair of lobes at the tip of the proboscis in some insects.
  • 2 Botany a central petal at the base of an orchid flower, typically larger than the other petals and of a different shape.

Origin:

early 19th century: from Latin, diminutive of labrum 'lip'