bite the dust, to

To be defeated or killed. The term became popular from American western films, in which cowboys and/or Indians frequently “bit the dust”—that is, were shot or shoved off their horses to the dusty ground. It became current in the late 1930s. However, the term occurs even earlier in William Cullen Bryant’s translation (1870) of Homer’s Iliad (“his fellow warriors . . . fall round him to the earth and bite the dust”) and it also is found in translations of Virgil’s Aeneid.