Source : Webster's Revised Unabridged Dictionary (1913)

Imprest \Im"prest\, n. [Cf. It. impresto, imprestito, LL.
   impraestitum. See {Imprest}, v. t., and {Impress} compulsion
   to serve.]
   A kind of earnest money; loan; -- specifically, money
   advanced for some public service, as in enlistment. --Burke.

         The clearing of their imprests for what little of their
         debts they have received.                --Pepys.

Imprest \Im*prest"\, v. t. [ imp. & p. p. {Imprested}; p. pr. &
   vb. n. {Impresting}.] [Pref. im- + prest: cf. It. imprestare.
   See {Prest}, n.]
   To advance on loan. --Burke.