Lapel n. : That part of a garment which is turned back; specifically, the lap, or fold, of the front of a coat in continuation of collar.

Example:
How can you get the white Lapel of a black garmet white again?

Taxonomy
lapel, Jacket lapel, Jacket lapels, coat, jacket, peaked lapel, notched lapel, clothing, suits, shawl collar, frock coats, shawl lapel, free encyclopedia, Alan Flusser, 1930s, closure, neck closure, garments.

Defination from the web:
lapel (American English), step lapel or step collar (British English) is sewn to the collar at an angle, creating a step effect. ... A lapel pin is also sometimes worn, and in punk fashion, the lapels of leather jackets are often adorned with various buttons and pins, usually ...