Massasauga \Mas`sa*sau"ga\, n. (Zo["o]l.) The black rattlesnake ({Crotalus, or Caudisona, tergemina}), found in the Mississippi Valley.
massasauga n 1: small pygmy rattlesnake [syn: {ground rattler}, {Sistrurus miliaris}] 2: pygmy rattlesnake found in moist areas from the Great Lakes to Mexico; feeds on mice and small amphibians [syn: {massasauga rattler}, {Sistrurus catenatus}]