Lapel/ləˈpel/ Definition 1 of 1Pro Tip 1/3Clothing part A lapel is specifically part of a formal or semiformal garment, like a suit or blazer. He straightened the lapel of his blazer before the interview. Pro Tip 2/3Decoration spot The lapel is often used to display pins, badges, or flowers, especially in formal events. She wore a red poppy on her lapel for Remembrance Day. Pro Tip 3/3Not always visible In some clothing styles, lapels may be designed to be less prominent or even hidden. The minimalist jacket had a hidden lapel, giving it a sleek look.