渣

slag (in mining or smelting) / dregs

surname Zha

to research / to check / to investigate / to examine / to refer to / to look up (e.g. a word in a dictionary)

variant of 楂[zha1]

"water" radical in Chinese characters (Kangxi radical 85), occurring in 沒|没[mei2], 法[fa3], 流[liu2] etc / see also 三點水|三点水[san1 dian3 shui3]