Retainer

- Noun

A fee paid to engage a lawyer or counselor to maintain a cause, or to prevent his being employed by the opposing party in the case; -- called also retaining fee.

- Noun

Hence, a servant, not a domestic, but occasionally attending and wearing his master's livery.

- Noun

One who is retained or kept in service; an attendant; an adherent; a hanger-on.

- Noun

One who, or that which, retains.