- The inner envelope of a flower; the part which surrounds
the organs of fructification, consisting of one or more leaves, called
petals. It is usually distinguished from the calyx by the fineness of
its texture and the gayness of its colors. See the Note under Blossom.
Meaning of 'corolla' (Princeton's WordNet)
1 . corolla
[ n]
Meaning (1): - (botany) the whorl of petals of a flower that collectively form an inner floral envelope or layer of the perianth