私用 sīyòng personal use Definitions Defs Origin Strokes Stroke Words Sentences Sents sīyòng personal use 私 sī nounadjective private (bound form) personal; private; belonging to an individual rather than the public or government用 yòng verb to use To use; to employ; to apply or make use of something to achieve a purpose.sīyòng illegal use 私 sī illegal (bound form) illegal; unofficial; involving smuggled or contraband goods用 yòng verb to use To use; to employ; to apply or make use of something to achieve a purpose.