Source : Webster's Revised Unabridged Dictionary (1913)

Exact \Ex*act"\, v. t. [imp. & p. p. {Exacted}; p. pr. & vb. n.
   {Exacting}.] [From L. exactus, p. p. of exigere; or fr. LL.
   exactare: cf. OF. exacter. See {Exact}, a.]
   To demand or require authoritatively or peremptorily, as a
   right; to enforce the payment of, or a yielding of; to compel
   to yield or to furnish; hence, to wrest, as a fee or reward
   when none is due; -- followed by from or of before the one
   subjected to exaction; as, to exact tribute, fees, obedience,
   etc., from or of some one.

         He said into them, Exact no more than that which is
         appointed you.                           --Luke. iii.
                                                  13.

         Years of servise past From grateful souls exact reward
         at last                                  --Dryden.

         My designs Exact me in another place.    --Massinger.