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Words related to flap

flap
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  • split flap

    a flap that is located on the under surface of the trailing edge of an aircraft wing and that splits away from the wing structure when rotated downward, producing an increase in lift or drag or both. Compare landing flap.

  • clack valve

    a simple nonreturn valve using either a hinged flap or a ball

  • flaperon

    a control surface functioning both as a flap and as an aileron.

  • flapper

    something broad and flat used for striking or for making a noise by striking.

  • flappy

    slack or loose, so as to flap readily.

  • landing flap

    a flap in the undersurface of the trailing edge of an aircraft wing, capable of being moved downward to increase either lift or drag or both, as for landing. Compare split flap (def 1).
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