filetPronunciation: /ˈfiːleɪ, ˈfɪlɪt/Definition of filet noun 1French spelling of fillet, used especially in the names of French or French-sounding dishes.filet de boeuf 2 [mass noun] a kind of net or lace with a square mesh. [ late 19th century: from French, 'net']filet in other Oxford dictionaries Definition of filet in the US English dictionary