noun, masculine/a.pa.ʁɛj/plural: appareils
apparatus, device; telephone; aircraft; an arrangement of people, decorations, etc., for purposes of pomp; a system (of organs)
“appareil photo” — camera
Synonyms: système
From appareiller (in Old French apareil). Less likely from a Vulgar Latin *apparic(u)lum; cf. apparātus (whence apparat).