What is the meaning of Petal?

One of the component parts of the corolla of a flower. It applies particularly, but not necessarily only, when the corolla consists of separate parts, that is when the petals are not connately fused. Petals are often brightly colored.

Term of endearment.

A lobe of a rose (geometric shape).

To spread out from, like the petals of a flower

Source: wiktionary.org