noun
- a piece of material attached on one side that can move freely
- the sound or action of something moving up and down or back and forth
- a state of worry, panic, or excitement
Usage: informal
verb
- to move up and down or back and forth, especially wings or arms
- to hang or swing loosely
Examples
- The tent flap was zipped shut against the wind.
- She heard the flap of wings as the bird took off.
- Don’t get in a flap about the test tomorrow.
- The flag flapped in the breeze.
- The bird flapped its wings and soared away.
- His coat was flapping behind him as he ran.
- The loose sail flapped noisily in the storm.