The Collaborative International Dictionary of English v.0.48:

Cashier \Cash*ier"\ (k[a^]sh*[=e]r"), n. [F. caissier, fr.
   caisse. See Cash.]
   One who has charge of money; a cash keeper; the officer who
   has charge of the payments and receipts (moneys, checks,
   notes), of a bank or a mercantile company.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cashier \Cash*ier"\, v. t. [imp. & p. p. Cashiered; p. pr. &
   vb. n. Cashiering.] [Earlier cash, fr. F. casser to break,
   annul, cashier, fr. L. cassare, equiv. to cassum reddere, to
   annul; cf. G. cassiren. Cf. Quash to annul, Cass.]
   1. To dismiss or discard; to discharge; to dismiss with
      ignominy from military service or from an office or place
      of trust.
      [1913 Webster]

            They have cashiered several of their followers.
                                                  --Addison.
      [1913 Webster]

            He had insolence to cashier the captain of the lord
            lieutenant's own body guard.          --Macaulay.
      [1913 Webster]

   2. To put away or reject; to disregard. [R.]
      [1913 Webster]

            Connections formed for interest, and endeared
      [1913 Webster]

            By selfish views, [are] censured and cashiered.
                                                  --Cowper.
      [1913 Webster]

            They absolutely cashier the literal express sense of
            the words.                            --Sowth.
      [1913 Webster]

WordNet (r) 3.0 (2006):

cashier
    n 1: an employee of a bank who receives and pays out money [syn:
         teller, cashier, bank clerk]
    2: a person responsible for receiving payments for goods and
       services (as in a shop or restaurant)
    v 1: discard or do away with; "cashier the literal sense of this
         word"
    2: discharge with dishonor, as in the army

Moby Thesaurus II by Grady Ward, 1.0:

118 Moby Thesaurus words for "cashier":
   accountant, auditor, ax, bank clerk, bank manager, bank officer,
   bank president, banker, banking executive, bar, bill broker,
   bookkeeper, boot, boot out, bounce, break, bump, bursar, bust,
   cambist, can, cashkeeper, chamberlain, compensator, comptroller,
   controller, curator, deconsecrate, defrayer, defrock, degrade,
   demote, deplume, depose, depositary, depository, deprive, dethrone,
   disbar, discharge, discounter, discrown, disemploy, disenthrone,
   dismiss, displace, displume, drum out, eject, eliminate, exclude,
   excommunicate, expel, financial officer, fire, furlough,
   give the ax, give the gate, investment banker, kick, kick out,
   kick upstairs, lay off, let go, let out, liquidate, liquidator,
   loan officer, make redundant, money broker, money changer,
   money dealer, moneylender, moneymonger, note broker, oust,
   overthrow, pass, payer, paymaster, pension, pension off, purge,
   purse bearer, purser, ratepayer, read out of, receiver,
   recompenser, release, remove, remove from office, remunerator,
   replace, retire, sack, separate forcibly, steward, strip,
   strip of office, strip of rank, superannuate, surplus, suspend,
   taxpayer, teller, terminate, throw out, treasurer, trust officer,
   trustee, turn off, turn out, unchurch, unfrock, unsaddle, unseat,
   unthrone



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

CASHIER. An officer of a moneyed institution, who is entitled by virtue of
his office to take care of the cash or money of such institution.
     2. The cashier of a bank is usually entrusted with all the funds of the
bank, its notes, bills, and other choses in action, to be used from time to
time for the ordinary and extraordinary exigencies of the bank. He usually
receives directly, or through subordinate officers, all moneys and notes of
the bank delivers up all discounted notes and other securities, when they
have been paid draws checks to withdraw the funds of the bank where they
have been deposited; and, as the executive officer of the bank, transacts
much of the business of the institution. In general, the bank is bound by
the acts of the cashier within the scope of his authority, expressed or
implied. 1 Pet. R. 46, 70Wheat. R. 300, 361 5 Wheat. R. 326; 3 Mason's R.
505; 1 Breese, R. 45; 1 Monr. Rep. 179. But the bank is not bound by a
declaration of the cashier, not within the scope of his authority; as when a
note is about to be discounted by the bank, he tells a person that he will
incur no risk nor responsibility by becoming an indorser upon such note. 6
Pet. R. 51; 8 Pet. R. 12.Vide 17 Mass. R. 1 Story on Ag. Sec. 114, 115; 3
Halst. R. 1; 12 Wheat. R. 183; 1 Watts & Serg. 161.

To CASHIER, punishment. To break; to deprive a military man of his office.
Example: every officer who shall be convicted, before a general court
martial, of leaving signed a false certificate relating to the absence of
either officer or private soldier, or relative to his daily pay, shall be,
cashiered. Articles of war, art. 14.