masa means: Spanish dough is a mixture of flour and ground corn. It can also be called instant corn flour tortilla mix or ground nixtamal. Fresh frozen masa, which comes in finely ground form in dehydrated form, is readily available at supermarkets across the Southwest. (in Cooking Dictionary)

What else does masa mean?

Made from dried corn, this dough is used in tortillas and other tamales. (in Merlin Dictionary)