Main Entry: ¹le·gion

Pronunciation: \ˈlē-jən\

Function: noun

Etymology: Middle English, from Anglo-French, from Latin legion-, legio, from legere to gather — more at legend

Date: 13th century

1 : the principal unit of the Roman army comprising 3000 to 6000 foot soldiers with cavalry
2 : a large military force; especially : army 1a
3 : a very large number : multitude
4 : a national association of ex-servicemen