spiny anteater n 1: a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea [syn: {echidna}, {spiny anteater}, {anteater}] 2: a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia [syn: {echidna}, {spiny anteater}, {anteater}]