1.That which is deposited, or laid or thrown down; as, a deposit in a flue; especially, matter precipitated from a solution (as the siliceous deposits of hot springs), or that which is mechanically deposited (as the mud, gravel, etc., deposits of a river). "The deposit already formed affording to the succeeding portion of the charged fluid a basis."
2.(Mining) A natural occurrence of a useful mineral under the conditions to invite exploitation.
3.That which is placed anywhere, or in any one's hands, for safe keeping; something intrusted to the care of another; esp., money lodged with a bank or banker, subject to order; anything given as pledge or security.
5.A place of deposit; a depository. (R.)