[look out] or [watch out] {v.}
1. To take care; be careful; be on guard. — Usually used as a command or warning.
* /"Look out!" John called, as the car came toward me./* /"Look out for the train," the sign at the railroad crossing warns./
2. To be alert or watchful; keep watching.
* /A collector of antique cars asked Frank to look out for a 1906 gas head lamp./
Compare: EYE OUT, ON THE WATCH. 3. {informal} To watch or keep (a person or thing) and do what is needed; provide protection and care. — Used with "for".
* /Lillian looked out for her sister's children one afternoon a week./* /Uncle Fred looked out for his brother's orphan son until the boy was through college./
Compare: LOOK AFTER.
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