Webster's Revised Unabridged Dictionary · 1913

Surcoat

Surcoat , noun

[Old English surcote, Old French surcote. See Sur-, and Coat, and compare Overcoat.]

1.
A coat worn over the other garments; especially, the long and flowing garment of knights, worn over the armor, and frequently emblazoned with the arms of the wearer.
A long surcoat of pers upon he had.. — Chaucer
At night, or in the rain, He dons a surcoat which he doffs at morn. — Emerson
2.
A name given to the outer garment of either sex at different epochs of the Middle Ages.