trigon; sambuca; ancient triangular harp
Refers to a historical stringed instrument with a triangular frame, used in ancient Greece and Rome. A specialized term encountered mainly in music history or archaeology contexts.
The trigon is a type of harp used in ancient Greece.
Compound of 三角 (さんかく, 'triangle') and 琴 (こと, 'stringed instrument'), literally 'triangle harp'. The reading こと for 琴 is the native Japanese word for stringed instruments, applied here to a Western ancient instrument.