depositor

from WordNet (r) 3.0 (2006)

depositor
    n 1: a person who has deposited money in a bank or similar
         institution

from The Collaborative International Dictionary of English v.0.48

Depositor \De*pos"i*tor\ (d[-e]*p[o^]z"[i^]*t[~e]r), n. [L., fr.
   deponere. See {Depone}.]
   One who makes a deposit, especially of money in a bank; --
   the correlative of depository.
   [1913 Webster]

from Bouvier's Law Dictionary, Revised 6th Ed (1856)

DEPOSITOR, contracts. He who makes a deposit. 
     2. He is generally entitled to receive the deposit from the depositary, 
but to this rule there are exceptions; as. when the depositor at the time of 
making the deposit had no title to the property deposited, and the owner 
claims it from the depositary, the depositor cannot recover it; and for this 
reason, that he can never be in a better situation than the owner. 1 Barn. & 
Ald. 450; 5 Taunt. 759. As to the place where the depositor is entitled to 
receive his deposit, see Story on Bailm. Sec. 117-120 1 Bouv. Inst. n. 1063.