in one's pocket

in one's pocket

1. In one's power or possession, under one's influence. For example, The defense lawyer had the jury in his pocket. [Mid-1800s]

2. in each other's pockets. In very close proximity or mutual dependence, as in Bert and Harry work in the same office, live in the same house, belong to the same clubsthey're constantly in each other's pockets. [Mid-1900s]