noun, masculine/ɡɛ.pje/plural: guêpiers
bee-eater; trap; wasp's nest
From guêpe (“wasp”) + -ier. Compare Italian vespaio, Occitan vespièr, Portuguese vespeiro, Spanish avispero, Romanian viespar, Catalan vesper, Friulian gjespâr, Sardinian ghespàrju.