DEPOSIT, anything laid down or separated; as in geology, any mass of material accumulated by a natural agency (see BED), and in chemistry, a precipitate or matter settling from a solution or suspension. Deposit is also used in the sense of earnest or security for the performance of a contract (see CONVEYANCING) in the law of contract, deposit or simple bailment is delivery or bailment of goods in trust to be kept without recompense, and re-delivered on demand (see BAILMENT). (For banking deposits, see BANK.)