Source : Webster's Revised Unabridged Dictionary (1913)

Mama \Ma*ma"\, n.
   See {Mamma}.

Source : WordNet®

mama
     n 1: informal terms for a mother [syn: {ma}, {mamma}, {mom}, {momma},
           {mommy}, {mammy}, {mum}, {mummy}, {mater}]
     2: a name under which Ninkhursag was worshipped