粉笔 fěnbǐ chalk Origin Definitions Defs Strokes Stroke Words Sentences Sents 无尘粉笔 wúchénfěnbǐ dustless chalk Chalk designed to produce little or no dust when used for writing or wiping on a blackboard无灰粉笔 wúhuīfěnbǐ dustless chalk A type of chalk designed to produce very little dust when writing or erasing.