to rub or roll between the hands or fingers; to twist

strokes 12
strokes after radical 10
搓板 搓板 cuo1 ban3
washboard; (slang) flat-chested (woman)

搓麻将 搓麻將 cuo1 ma2 jiang4
to play mahjong

搓揉 搓揉 cuo1 rou2
to knead; to rub

搓洗 搓洗 cuo1 xi3
to rub clean (garments); to scrub

搓衣板 搓衣板 cuo1 yi1 ban3

揉搓 揉搓 rou2 cuo5
to rub; to torment; to torture