noun
shoelace; bootlace
Refers to the lace used to fasten shoes or boots. Cross-referenced with 靴紐, a compound with the same meaning.
See also: 靴紐
靴の紐がほどけているよ。
Your shoelace is untied.
新しい靴の紐を買わなくちゃ。
I have to buy new shoelaces.
靴紐 is a compound noun with the same meaning, but 靴の紐 is a phrase using the possessive particle の, which can sound slightly more descriptive or conversational.
Compound of 靴 (shoe) + の (possessive particle) + 紐 (string, cord).