horn (instrument); bugle; hunting horn
Refers to a wind instrument traditionally made from an animal horn, used for signaling or hunting.
On medieval battlefields, horns were used for signaling.
He blows a hunting horn when hunting.
Compound of 角 (つの, 'horn') and 笛 (ふえ, 'flute, whistle'), literally 'horn flute'. The reading つのぶえ is a straightforward kun'yomi compound.