Duolingo

== English == === Etymology === All senses ultimately from Duolingo, a language learning app owned by the American educational technology company of the same name; from duo- (“two”) +‎ lingo (“language”). The first two senses formed via genericized trademark. === Pronunciation === === Noun === Duolingo (plural Duolingos) (colloquial) A language learning service or application. (colloquial) A website, service or application that gamifies or simplifies learning, such as through having convenient, guided lessons and an informal (laidback) educational environment. (colloquial, chiefly Internet slang, uncommon) A lesson on Duolingo. (colloquial, Internet slang, rare) A language learning course on Duolingo.