D defs.my
Entry 1 sense Webster, 1913

Flageolet

/flăjˌ-əl-ĕt'/ · Flag·eo·let · IPA /ˈflæʒəleɪ/
01 n. A small wooden pipe, having six or more holes, and a mouthpiece inserted at one end. It produces a shrill sound, softer than of the piccolo…
  1. 1.
    A small wooden pipe, having six or more holes, and a mouthpiece inserted at one end. It produces a shrill sound, softer than of the piccolo flute, and is said to have superseded the old recorder.(Mus.)
Phrases & compounds
Flageolet tones — the naturel harmonics or overtones of stringed instruments.