From Longman Dictionary of Contemporary Englishbe/go on the prowl (for something/somebody)be/go on the prowl (for something/somebody)LOOK FOR a) if an animal is on the prowl, it is hunting b) if someone is on the prowl, they are moving around different places, looking for an opportunity to do something local men out on the prowl (=looking for people to have a sexual relationship with) in the city’s bars and nightclubs She’s always on the prowl for bargains. → prowl
Examples from the Corpus
out on the prowl• On the nights that Elaine went out with her friends, he went out on the prowl. 