{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.
See: LOOK OUT.