留心眼儿 liúxīnyǎnr to be on the alert 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心眼儿 心眼兒 xīnyǎnr cleverness Wits, shrewdness, or the ability to be calculating and resourceful in handling affairs.