IPA: /ləˈpɛl/
KK: /ləˈpɛl/
A part of a coat or jacket that extends from the collar and folds back against the front of the garment.
He pinned the flower to his lapel before the ceremony.
Lapel → The word 'lapel' originates from the Old French 'lapel', meaning the part of a garment that is turned back. It refers specifically to the folded part of a coat or jacket that is visible when the garment is worn.
Imagine the 'turned back' part of a coat — that's what a lapel is, as it comes from the Old French word for that specific garment feature.