IPA: /ˈdjuːlæp/
KK: /djuːlæp/
A loose fold of skin that hangs from the neck of some animals or people.
The lizard displayed its colorful dewlap to attract a mate.
Dewlap → The word is formed from "dew" (from Old English *deaw*, meaning moisture or condensation) and "lap" (from Old English *lappa*, meaning a fold or flap). A dewlap refers to a fold of skin that hangs down, often seen in certain animals, which can be associated with moisture.
Think of 'moisture' ('dew') and a 'fold' ('lap') of skin that hangs down — that's what a dewlap is.
No commonly confused words.