Source : Webster's Revised Unabridged Dictionary (1913)

Belly \Bel"ly\, v. t. [imp. & p. p. {Bellied}; p. pr. & vb. n.
   {Bellying}.]
   To cause to swell out; to fill. [R.]

         Your breath of full consent bellied his sails. --Shak.

Source : WordNet®

bellying
     adj : curving outward [syn: {bellied}, {bulbous}, {bulging}, {bulgy},
            {protuberant}]