Definition of "anteater"

Any of several animals of South and Central America, in suborder Vermilingua, which are noted for eating ants and termites which they catch with their long sticky tongues.  examples

Any of some other not closely related species that feed with ants, including pangolin (scaly anteater), echidna (spiny anteater), aardvark and numbat (banded anteater).  examples