petal Meaning, Definition & Usage

  1. noun part of the perianth that is usually brightly colored
    flower petal.

WordNet

Pet"al noun
Etymology
Gr. a leaf, a leaf or plate of metal, fr. outspread, broad, flat: cf. F. pétale. See Fathom.
Definitions
  1. (Bot.) One of the leaves of the corolla, or the colored leaves of a flower. See Corolla, and Illust. of Flower.
  2. (Zoöl.) One of the expanded ambulacra which form a rosette on the black of certain Echini.

Webster 1913