Meaning of ALLOY in English

I. al ‧ loy 1 /ˈælɔɪ $ ˈælɔɪ, əˈlɔɪ/ BrE AmE noun [uncountable and countable]

[ Date: 1600-1700 ; Language: French ; Origin: aloi , from aloyer 'to combine' , from Latin alligare ; ⇨ ↑ ally 2 ]

a metal that consists of two or more metals mixed together:

Brass is an alloy of copper and zinc.

II. al ‧ loy 2 /əˈlɔɪ $ əˈlɔɪ, ˈælɔɪ/ BrE AmE verb [transitive + with]

technical to mix one metal with another

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.