Sifflet
noun
Sif·flet
ˈsifˌflə̄t
variants or less commonly Sifflöt
plural Sifflets also Sifflöts
: an organ flute stop usually of 1′ pitch with a whistling tone
Word History
Etymology
German, probably modification (influenced by flöte flute) of French sifflet whistle, from Middle French, from siffler to whistle + -et