i Register
In some senses, legionnaire is marked as US. Watch for register when choosing this word.
legionnaire
UK /ˌliːdʒəˈnɛə(ɹ)/ US /ˌlidʒəˈnɛ(ə)r/
noun 4
Definitions
noun
1
A person who is neither a citizen nor colonial/imperial subject of the state whose military they join.
2
A member of a legion, especially the French Foreign Legion.
noun
1
Alternative letter-case form of legionnaire.
2
A member of the American Legion.
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