n. 外衣

Surcoat \Sur"coat`\, n. [OE. surcote, OF. surcote. See {Sur-},
and {Coat}, and cf. {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.