Webster's Revised Unabridged Dictionary · 1913

Legionary

Legionary (-a*ry) , adjective

[Latin legionarius: compare French légionnaire.]

Belonging to a legion; consisting of a legion or legions, or of an indefinitely great number; as, legionary soldiers; a legionary force.
The legionary body of error. — Sir T. Browne

Legionary (lē"jun*a*ry) , noun

A member of a legion. — Milton