The Collaborative International Dictionary of English v.0.48:

Deodate \De"o*date`\, n. [L. Deo to God (Deus God) + datum thing
   given.]
   A gift or offering to God. [Obs.]
   [1913 Webster]

         Wherein that blessed widow's deodate was laid up.
                                                  --Hooker.
   [1913 Webster]