絃
げ
ん
Meanings
1
Specifically refers to the string of a shamisen or similar traditional Japanese stringed instrument; the kanji 絃 is used for this musical context, while 弦 is more general.
See also: 弦 (げん)
The shamisen string broke, so I put on a new one.
2
Metonymic use: the string stands for the whole instrument. Rare and mostly found in poetic or traditional contexts.
He picked up the stringed instrument and began to play quietly.