noun
kite string; cotton yarn
Refers to the string used for flying kites, typically made of cotton or similar material. Also used more generally for cotton yarn in crafting contexts.
タコ糸が絡まってしまった。
The kite string got tangled.
このタコ糸は丈夫で切れにくい。
This kite string is strong and hard to break.
Compound of タコ (kite) and 糸 (thread). The word is straightforward and modern, with no obscure historical derivation.