Webster's Revised Unabridged Dictionary · 1913

Legion

Legion (lē"jun) , noun

[Old English legioun, Old French legion, French légion, from Latin legio, from legere to gather, collect. See Legend.]

1.
(Rom. Antiquities) A body of foot soldiers and cavalry consisting of different numbers at different periods, -- from about four thousand to about six thousand men, -- the cavalry being about one tenth.
2.
A military force; an army; military bands.
3.
A great number; a multitude.
Where one sin has entered, legions will force their way through the same breach. — Rogers
4.
(Taxonomy) A group of orders inferior to a class.
Collocations (1)
Legion of honor , an order instituted by the French government in 1802, when Bonaparte was First Consul, as a reward for merit, both civil and military.