Pōl'y-ēr'gŏs, n.

n. [Gr. πολύς, much, and ἐργεῖν, to work.] (Entom.) A genus of ants, of which one species (P. rufescens) is remarkable for making incursions into the territories of another species of ant (Formica fusca), and capturing the larvæ, to be reared as slaves; amazon-ant. Baird.