The Collaborative International Dictionary of English v.0.48:

Oxamide \Ox*am"ide\, n, [Oxalic + amide.] (Chem.)
   A white crystalline neutral substance (C2O2(NH2)2) obtained
   by treating ethyl oxalate with ammonia. It is the acid amide
   of oxalic acid. Formerly called also oxalamide.
   [1913 Webster]