noun
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)
三味線の絃が切れたので、新しいのを張った。
The shamisen string broke, so I put on a new one.
noun
Metonymic use: the string stands for the whole instrument. Rare and mostly found in poetic or traditional contexts.
彼は絃を手に取り、静かに弾き始めた。
He picked up the stringed instrument and began to play quietly.