with obj.
1- (of a person or animal) move about (a place) in search of or as if in search of prey（人或动物为觅食而）潜行; 巡行; 搜寻：
black bears prowl the canyons.
黑熊在山谷里巡行。
1.1
- no obj., with adverbial(of a person or animal) move stealthily or restlessly as or like a hunter（人, 动物）（偷偷而又不安地）徘徊：
David had been prowling about in the garden, waiting for her car.
戴维一直在花园里徘徊, 等着她的车出现。
- an act of prowling徘徊, 闲逛：
I met her once on one of my off-duty bookshop prowls.
我曾在一次下班后逛书店时见过她。
短语
on the prowl
- (of a person or animal) moving about in search or as if in search of prey（人, 动物）在潜行; 徘徊; 搜寻。
词源
late Middle English: of unknown origin.