aluminium

noun

1. (countable, uncountable)A light, silvery metal extracted from bauxite, and a chemical element (symbol Al) with an atomic number of 13.

   “There are plenty of reasons, Australians may reason, why our nation might be exempted from the threatened next round of Trumpian tariffs, on stuff like aluminium and pharmaceuticals.”

2. (countable)A single atom of this element.
3. (countable, slang, uncountable)Aircraft or other machinery made partially or wholly of aluminium.