Senses
渣 dregs
dregs; residue; slag; leftovers of a substance after the liquid or useful part is removed
渣 scraps
scraps; crumbs; fragments; small broken pieces of something
渣 scum
scum; a person of low character; a dreg of society
渣 lumps
lumps; clods; small chunks (like coal cinders or slag)
渣 surname
a Chinese surname