Added 9 October 2026 haydn noun Categories: PeopleLanguageRare Words noun ! Definition from WordNet 3.1, Princeton University. More about haydn at Wordnik → Where our words come from → Prolific Austrian composer who influenced the classical form of the symphony (1732-1809). The music of Haydn. Related Words: mozartsupergreathaydenstudienhahnhandelhauserhafnerhayduhertz Back to today's word