What does aluminium mean?
The definition of aluminium
Al`u*min”i*um, n.
Etym: [L. alumen. See Alum.] (Chem.)

The metallic base of alumina. This metal is white, but with a bluish tinge, and is remarkable for its resistance to oxidation, and for its lightness, pertaining a specific gravity of about 2.6. Atomic weight 27.08. Symbol Al. Aluminium bronze or gold, a pale gold- colored alloy of aluminium and copper, used for journal bearings, etc.