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Flap vs Undefined - What's the difference?

flap | undefined |

As a noun flap

is anything broad and flexible that hangs loose, or that is attached by one side or end and is easily moved.

As a verb flap

is to move (something broad and loose) back and forth.

As an adjective undefined is

lacking a definition or value.

flap

English

Noun

(en noun)
  • Anything broad and flexible that hangs loose, or that is attached by one side or end and is easily moved.
  • * Sir Thomas Browne
    • a cartilaginous flap upon the opening of the larynx
  • *
  • A hinged leaf, as of a table or shutter.
  • An upset, stir, scandal or controversy
  • The motion of anything broad and loose, or a stroke or sound made with it.
  • * , chapter=4
    • , title= Mr. Pratt's Patients , passage=Then he commenced to talk, really talk. and inside of two flaps of a herring's fin he had me mesmerized, like Eben Holt's boy at the town hall show. He talked about the ills of humanity, and the glories of health and Nature and service and land knows what all.}}
  • A disease in the lips of horses.
  • (aviation) A hinged surface on the trailing edge of the wings of an aeroplane.
  • (surgery) A piece of tissue incompletely detached from the body, as an intermediate stage of plastic surgery.
  • (slang) The female genitals.

    • Synonyms

    * (upset)

    See also

    * ("flap" on Wikipedia) * * lappet

    Verb

    (flapp)
  • To move (something broad and loose) back and forth.
    • The crow slowly flapped its wings.
  • *
  • To move loosely back and forth.
    • The flag flapped in the breeze.
  • * {{quote-news
    • , year=2011 , date=September 29 , author=Tom Rostance , title=Stoke 2 - 1 Besiktas , work=BBC Sport citation , page= , passage=Former Turkey goalkeeper Rustu Recber flapped at his first Delap throw but was given a soft free-kick by referee Antony Gautier.}}

    Derived terms

    * cat flap * flapper * unflappable ----

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined