Fipple

//ˈfɪpəl// noun

Definitions

Noun
  1. 1
    The mouthpiece of a ducted flute, or the plug forming the floor of the windway.
  2. 2
    a wooden plug forming a flue pipe (as the mouthpiece of a recorder) wordnet

Etymology

Perhaps related to Icelandic flipi (“the lip of a horse”).

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