The Collaborative International Dictionary of English v.0.48:

Prodigalize \Prod"i*gal*ize\, v. i.
   To act as a prodigal; to spend liberally. --Sherwood.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Prodigalize \Prod"i*gal*ize\, v. t.
   To expend lavishly. --Ld. Lytton.
   [1913 Webster]