1. (noun)aluminum, aluminium, Al, atomic number 13 a silvery ductile metallic element found primarily in bauxite Synonyms: aluminum, aluminium, atomic number 13
2. (noun)Alabama, Heart of Dixie, Camellia State, AL a state in the southeastern United States on the Gulf of Mexico; one of the Confederate states during the American Civil War Synonyms: aluminum, aluminium, atomic number 13