Cōr'ol or Co-rōl'la, n.

noun

n. [Lat. corolla, diminutive of corona, garland, crown.] (Bot.) The inner covering of a flower; the part which surrounds the organs of fructification, and is composed of one or more leaves, called petals. It is usually distinguished from the perianth by the fineness of its texture and the gayness of its colors.

A line drawing of a flowering plant showing its petals, central stamens, and stem.
Corolla.