WordReference Random House Unabridged Dictionary of American English © 2026
la•bel•lum
(lə bel′əm),USA pronunciation n., pl. -bel•la (-bel′ə).USA pronunciation [Bot.]
la•bel′loid, adj.
- Botanythe petal of an orchid that differs more or less markedly from the other petals, often forming the most conspicuous part;
the lip.
- Latin, diminutive of labrum lip; for formation see castellum
- 1820–30
'labellum' also found in these entries (note: many are not synonyms or translations):