grille Syllabification: (grille)Pronunciation: /gril/ (also grill)Translate grille | into French | into German | into Italian | into Spanish Definition of grille noun a grating or screen of metal bars or wires, placed in front of something as protection or to allow ventilation or discreet observation. Origin: mid 17th century: from French, from medieval Latin craticula, diminutive of cratis 'hurdle'; related to crate, grate2, and griddlegrille in other Oxford dictionaries Definition of grille in the British & World English dictionary