Толковый словарь английского языка Oxford English Reference - prowl

v. & n. --v. 1 tr. roam (a place) in search or as if in search of prey, plunder, etc. 2 intr. (often foll. by about, around) move about like a hunter. --n. the act or an instance of prowling. Phrases and idioms on the prowl moving about secretively or rapaciously, esp. in search of sexual contact etc. prowl car US a police squad car. Derivatives prowler n. Etymology: ME prolle, of unkn. orig.