Source : Webster's Revised Unabridged Dictionary (1913)

Pout \Pout\ (pout), v. i. [imp. & p. p. {Pouted}; p. pr. & vb.
   n. {Pouting}.] [OE. pouten, of uncertain origin; cf. Prov.
   pot lip, Prov. F. potte, faire la potte to pout, W. pwdu to
   pout, be sullen, poten, potten, a paunch, belly.]
   1. To thrust out the lips, as in sullenness or displeasure;
      hence, to look sullen.

            Thou poutest upon thy fortune and thy love. --Shak.

   2. To protrude. ``Pouting lips.'' --Dryden.

Pouting \Pout"ing\, n.
   Childish sullenness.