Nantoka/煤渣méi zhā煤渣 (méi zhā) is a Chinese word meaning “slack”.Meanings1slackCharacters in 煤渣煤méi · coal渣zhā · slag (in mining or smelting)Related words渣slag (in mining or smelting)煤气coal gas煤coal渣滓residue煤矿coal mine残渣remainder煤油kerosene渣子dregs煤炭coal煤灰soot煤球charcoal briquette采煤coal miningStudy Chinese with flashcards →