■ noun
1》 a division of 3,000–6,000 men in the ancient Roman army.
2》 ( the Legion ) the Foreign Legion.
3》 a national association of former servicemen and servicewomen, such as the Royal British Legion.
4》 ( a ~/~s of ) a vast number of people or things.
■ adjective great in number: her fans are ~.
Derivatives
~ed adjective
Origin
ME: via OFr. from L. legio(n-) , from legere 'choose, levy'.