Definition of keep a lookout for
- The police officer walked through the neighborhood, keeping a (sharp) lookout for any suspicious activity.
: to retain in one's possession or power
: to refrain from granting, giving, or allowing
: to have in control
: the means or provisions by which one is kept
: one that keeps or protects: such as
: fortress, castle
What made you want to look up keep a lookout for? Please tell us where you read or heard it (including the quote, if possible).