1.
scrap, waste material
Small leftover pieces or fragments from something; materials no longer useful.
2.
worthless person (derogatory)
A derogatory term for a person considered to be useless or of low character.
屑 means scraps, waste, or refuse. It often appears in compounds referring to specific types of waste material.
COMMON COMPOUNDS:
INSULTING USAGE:
When applied to people, 屑 is extremely derogatory — equivalent to calling someone "scum" or "trash." This usage is common in manga, anime, and online speech, but is very offensive in real life.
WRITING:
Often written in hiragana (くず) or katakana (クズ), especially in the insulting sense. The kanji 屑 appears more in formal or compound usage.