Waste, scraps, or garbage; unwanted pieces or leftovers of materials or objects.
紙くずはリサイクルボックスに入れてください。
Please put paper waste into the recycling box.
古い家具を解体して木くずを処分した。
We dismantled the old furniture and disposed of the wood scraps.
台所のくずをまとめて捨てる。
Gather the kitchen scraps and throw them away.
A derogatory term meaning scum or a worthless person; used to insult or belittle someone or something.
そんなことをするやつはくずだ。
Someone who does that is scum.
詐欺師は人の信頼を利用するくずだ。
A con artist is scum who takes advantage of people's trust.
彼の言動は社会のくずだと非難された。
His behavior was condemned as scummy by society.