noun
bits of cotton; cotton waste; cotton lint
Refers to small pieces, fluff, or waste from cotton, such as lint or leftover bits.
ポケットの中に綿くずがたまっていた。
Bits of cotton had accumulated in the pocket.
掃除機で綿くずを吸い取った。
I vacuumed up the cotton lint.
綿 is cotton in general, while 綿くず specifically refers to small bits or waste cotton.
糸くず is bits of thread, whereas 綿くず is bits of cotton, often fluffier.
Compound of 綿 (わた, cotton) and 屑 (くず, waste, scraps).