noun, masculine/fuʁ.mi.lje/plural: fourmiliers
fourmilier is masculine in French.
anteater; any of a number of different species of ant-eating birds
“George Pouchet, Mémoires sur le Grand Fourmilier, Paris 1874, 68” — It is known that the oral cavity of the anteaters, despite its extremely narrow orifice, reaches considerable extents.
From Italian formigaro. By surface analysis, fourmi (“ant”) + -ier.