headwind

== English == === Etymology === From Middle English *hedwind, from Old English hēafodwind, equivalent to head +‎ wind. Cognate with Old Norse höfuðvindr. === Pronunciation === IPA(key): /ˈhɛdˌwɪnd/ === Noun === headwind (plural headwinds) (nautical, physics) A wind that blows directly against the course of a vehicle, like an aircraft, train, or ship. (transferred sense) A strong force that impedes or reverses progress. === Verb === headwind (third-person singular simple present headwinds, present participle headwinding, simple past and past participle headwinded) (transitive, uncommon) To blow directly against the course of a vehicle, like an aircraft, train, or ship. (idiomatic, uncommon) To impede or reverse progress. ==== Antonyms ==== tailwind ==== Translations ====