flapping

Pronunciation:  US [flæp] UK [flæp]
  • n."Machine" (cowling, radiator, etc) flap; "doctors" (left after surgery or transplantation) flap (Gill) cover
  • v.Slap; wings (wings), Pat (mosquitoes, flies); (sails, curtains, etc)
  • WebFlipping; swings; wingbeat