What does "basset horn" mean?

An alto instrument of the clarinet family, pitched in F below middle C, with a range reaching down to F below that.

What is a synonym for "basset horn"?

Common synonyms include: bassoon, clarinet, english horn, fife, flute, oboe.

noun

noun ·Rare ·Advanced level

Noun

1
An alto instrument of the clarinet family, pitched in F below middle C, with a range reaching down to F below that.
2
a tenor clarinet; pitched in the key of F below the B-flat clarinet wordnet

From German Bassetthorn, translation of French cor de bassette, from Italian corno di bassetto.