Surcoat

n.	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.

Noun	1.	surcoat - a loose outer coat usually of rich material
	2.	surcoat - a tunic worn over a knight's armor

coat