姑こ洗せん

noun

5th note of the ancient Chinese chromatic scale (approx. F#)

Technical term from ancient Chinese music theory; part of the 十二律 (twelve-tone system). Cross-referenced with 下無.

See also: 下無 · 十二律

• 姑こ洗せんは十じゅう二に律りつの一ひとつで、西せい洋よう音おん楽がくのFシャープに近ちかい音おととされる。

  Kosen is one of the twelve pitches of the ancient Chinese chromatic scale, said to be close to F sharp in Western music.

noun

third lunar month

Rare classical term for the third month of the lunar calendar; not used in modern everyday language.

• 旧きゅう暦れきでは、姑こ洗せんは春はるの終おわり頃ごろにあたる。

  In the old lunar calendar, kosen corresponds to the end of spring.