Labellum (plural: labella) is the Latin diminutive of labium, meaning lip. These are anatomical terms used descriptively in biology:
Labellum (botany), a part of a flower Labellum (insect anatomy), a part of the mouth of an insect Labella is also a surname.
Ana María Martínez Labella, Spanish politician Edgardo Labella (1951–2021), Filipino politician
See also La Bella, portrait of an unidentified woman by Titian