noun
A cylindrical object for winding thread or string, used in sewing, weaving, or kite flying.
ミシンに糸巻きをセットする。
I set the bobbin in the sewing machine.
凧揚げに使う糸巻きを買った。
I bought a spool for kite flying.
noun
The peg on a stringed instrument used to adjust string tension; often called 糸巻き on traditional Japanese instruments like the shamisen.
三味線の糸巻きを回して調弦する。
I tune the shamisen by turning the tuning pegs.
Compound of 糸 (ito, 'thread') and 巻き (maki, 'winding'), from the verb 巻く (maku, 'to wind').