Definitions

1. noun

a fold or flap of skin or other material, typically hanging loose, as on an animal’s neck or a bird’s wing

“The lappet on her dog’s neck made it look adorable.”

2. noun

a decorative hanging flap or fold on a piece of clothing, such as a cloak or a collar

“The fancy lappet on her cloak caught everyone’s attention at the medieval reenactment.”

3. noun

a flap or fold in a leaf or other plant part

“The lappet on the leaf helped it to move in the breeze.”