Hn.

Noun

French horn (plural French horns)

1. A coiled brass musical instrument, derived from the French hunting horn, which has rotary valves.
   • Using the “endangered species” model employed by the World Wide Fund for Nature, campaigners are highlighting the scarcity of bassoonists and paving the way for the promotion of some other orchestral instruments that are under threat, such as the oboe, French horn, viola, trombone and double bass.2015 August 1, Vanessa Thorpe, “Musicians launch campaign to save the bassoon as shortage threatens orchestra”, in The Guardian