留心眼 liúxīnyǎn to be on guard Origin Definitions Defs Strokes Stroke Words Sentences Sents 留 liú verb to pay attention (bound form) To focus one's attention or be mindful; often seen in 留心 liúxīn or 留意 liúyì心眼 xīnyǎn wits cleverness or the ability to think through a situation; thoughtfulness