The Collaborative International Dictionary of English v.0.48:

Deposit \De*pos"it\, n. [L. depositum, fr. depositus, p. p. of
   deponere: cf. F. d['e]p[^o]t, OF. depost. See Deposit, v.
   t., and cf. Depot.]
   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).
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            The deposit already formed affording to the
            succeeding portion of the charged fluid a basis.
                                                  --Kirwan.
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   2. (Mining) A natural occurrence of a useful mineral under
      the conditions to invite exploitation. --Raymond.
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   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.
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   4. (Law)
      (a) A bailment of money or goods to be kept gratuitously
          for the bailor.
      (b) Money lodged with a party as earnest or security for
          the performance of a duty assumed by the person
          depositing.
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   5. A place of deposit; a depository. [R.]
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   Bank of deposit. See under Bank.

   In deposit, or On deposit, in trust or safe keeping as a
      deposit; as, coins were received on deposit.
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The Collaborative International Dictionary of English v.0.48:

Bank \Bank\, n. [F. banque, It. banca, orig. bench, table,
   counter, of German origin, and akin to E. bench; cf. G. bank
   bench, OHG. banch. See Bench, and cf. Banco, Beach.]
   1. An establishment for the custody, loan, exchange, or
      issue, of money, and for facilitating the transmission of
      funds by drafts or bills of exchange; an institution
      incorporated for performing one or more of such functions,
      or the stockholders (or their representatives, the
      directors), acting in their corporate capacity.
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   2. The building or office used for banking purposes.
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   3. A fund to be used in transacting business, especially a
      joint stock or capital.
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            Let it be no bank or common stock, but every man be
            master of his own money.              --Bacon.
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   4. (Gaming) The sum of money or the checks which the dealer
      or banker has as a fund, from which to draw his stakes and
      pay his losses.
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   5. In certain games, as dominos, a fund of pieces from which
      the players are allowed to draw; in Monopoly, the fund of
      money used to pay bonuses due to the players, or to which
      they pay fines.
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   6. a place where something is stored and held available for
      future use; specifically, an organization that stores
      biological products for medical needs; as, a blood bank,
      an organ bank, a sperm bank.
      [PJC]

   Bank credit, a credit by which a person who has given the
      required security to a bank has liberty to draw to a
      certain extent agreed upon.

   Bank of deposit, a bank which receives money for safe
      keeping.

   Bank of issue, a bank which issues its own notes payable to
      bearer.
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