Waste paper; scraps of paper — torn or unusable pieces of paper meant to be thrown away.
机の上に新聞の紙くずが散らかっている。
Scraps of newspaper are scattered on the desk.
紙くずは資源ごみに分けて出してください。
Please sort waste paper into recyclable garbage.
包装の紙くずをまとめて捨てた。
I gathered the wrapping paper scraps and threw them away.