润滑 rùnhuá to lubricate Origin Definitions Defs Strokes Stroke Words Sentences Sents rùnhuá to lubricate 润 潤 rùn verb to moisten to moisten; to lubricate; to soak滑 huá verb to slide to slip, slide, or glide across a smooth surfacerùnhuá smooth 润 潤 rùn adjective moist and glossy moist; sleek; smooth and shiny; not dry滑 huá adjective slippery slippery or smooth; having a surface with very little friction