Source : Webster's Revised Unabridged Dictionary (1913)

Drench \Drench\, v. t. [imp. & p. p. {Drenched}; p. pr. & vb. n.
   {Drenching}.] [AS. drencan to give to drink, to drench, the
   causal of drincan to drink; akin to D. drenken, Sw.
   dr["a]nka, G. tr["a]nken. See {Drink}.]
   1. To cause to drink; especially, to dose by force; to put a
      potion down the throat of, as of a horse; hence. to purge
      violently by physic.

            As ``to fell,'' is ``to make to fall,'' and ``to
            lay,'' to make to lie.'' so ``to drench,'' is ``to
            make to drink.''                      --Trench.

   2. To steep in moisture; to wet thoroughly; to soak; to
      saturate with water or other liquid; to immerse.

            Now dam the ditches and the floods restrain; Their
            moisture has already drenched the plain. --Dryden.

Drench \Drench\, n. [AS. drenc. See {Drench}, v. t.]
   A drink; a draught; specifically, a potion of medicine poured
   or forced down the throat; also, a potion that causes
   purging. ``A drench of wine.'' --Dryden.

         Give my roan horse a drench.             --Shak.

Drench \Drench\, n. [AS. dreng warrior, soldier, akin to Icel.
   drengr.] (O. Eng. Law)
   A military vassal mentioned in Domesday Book. [Obs.]
   --Burrill.

Source : WordNet®

drench
     v 1: drench or submerge or be drenched or submerged; "The tsunami
          swamped every boat in the harbor" [syn: {swamp}]
     2: force to drink
     3: permeate or impregnate; "The war drenched the country in
        blood" [syn: {imbrue}]
     4: cover with liquid; pour liquid onto; "souse water on his hot
        face" [syn: {douse}, {dowse}, {soak}, {sop}, {souse}]