Definitions for flapping
flap, flapping, flutter, fluttering(noun)
the motion made by flapping up and down
The action of the verb to flap.
A phonological process found in many dialects of English, especially American English and Canadian English, by which intervocalic /t/ and /d/ surface as the alveolar flap /u027E/ before an unstressed syllable, so that words such as "metal" and "medal" are pronounced similarly or identically.
A description of a network interface or device that changes rapidly and repeatedly between online and offline states (compare thrashing).
That faulty network card appears to be flapping.
That flaps or flap.