Definition of: corolla

(kə·rol′ə) noun Bot.
The second series or inner circle of flower leaves, usually colored, forming the inner floral envelope or inner perianth, and serving mainly to attract insects; the petals of a flower collectively. Also cor·ol (kor′əl). [<L, dim. of corona crown]
—cor·ol·late (kôr′ə·lāt, kor′-), cor′ol·lat′ed adjective