What is Crook ?
Crook is (noun) 1. a dishonest dealer I don’t trust the government – they’re a bunch of crooks. That secondhand car dealer is a bit of a crook. 2. a bend She held the baby in the crook of her arm. 3. a long stick with a bent top, used by shepherds(adj) (in Australia) ill
source: Easier English, Student Dictionary Upper Intermediate Level