fenestron

== English == === Etymology === Borrowed from French fenestron (“small window”), ultimately from Latin fenestra (“window”). === Noun === fenestron (plural fenestrons) (aviation) A protected tail rotor of a helicopter, operating like a ducted fan. === Anagrams === forenenst == Esperanto == === Pronunciation === IPA(key): /feˈnestron/ === Noun === fenestron accusative singular of fenestro == French == === Pronunciation === === Noun === fenestron m (plural fenestrons) small window fenestron === Further reading === “fenestron”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012