keep an eye out for

Idioms and Phrases

Also, keep a sharp lookout for . Be watchful for something or someone, as in Keep an eye out for the potholes in the road , or They told him to keep a sharp lookout for the police . The first expression, sometimes amplified to keep a sharp eye out for , dates from the late 1800s, the variant from the mid-1700s. Also see have one's eye on , def. 1; keep a weather eye ; keep one's eyes open ; look out .