hip pocket

Short definition from Wiktionary

Noun

1. 1
   A pocket found near of just behind the hip in a pair of trousers or a skirt.
2. 2
   A person's assets; financial matters.

Verb

1. 1
   Of a talent agent, to informally represent (an actor, screenwriter etc.) without signing a formal contract.

Adjective

1. 1
   Of a size suitable for putting into a hip pocket; of small size or scope.