/ ˌliːdʒəˈneə(r); NAmE -ˈner/ noun
a member of a legion , especially the French Foreign Legion
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WORD ORIGIN
early 19th cent.: from French légionnaire , from légion legion, from Latin legio , from legere choose, levy. The adjective dates from the late 17th cent., in early use often in the phrase my, their, etc. name is legion , i.e. we, they, etc. are many (Mark 5:9).