trigonon means A small triangular harp. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- A small triangular harp.“The early Greek Trigonon, like its progenitor the Egyptian harp, appears to have had no fore-pillar; small Trigona were, however, made at some subsequent but unascertained time, with a fore-pilar and a very small sound box.”