Source : Webster's Revised Unabridged Dictionary (1913)

Concoct \Con*coct"\, v. t. [imp. & p. p. {Concocted}; p. pr. &
   vb. n. {Concocting}.] [L. concoctus, p. p. of concoquere to
   cook together, to digest, mature; con- + coquere to cook. See
   {Cook}.]
   1. To digest; to convert into nourishment by the organs of
      nutrition. [Obs.]

            Food is concocted, the heart beats, the blood
            circulates.                           --Cheyne.

   2. To purify or refine chemically. [Obs.] --Thomson.

   3. To prepare from crude materials, as food; to invent or
      prepare by combining different ingredients; as, to concoct
      a new dish or beverage.

   4. To digest in the mind; to devise; to make up; to contrive;
      to plan; to plot.

            He was a man of a feeble stomach, unable to concoct
            any great fortune.                    --Hayward.

   5. To mature or perfect; to ripen. [Obs.] --Bacon.