1rare Especially of an animal: having variegated black and white colouring; characterized by a mixture of black and white.
2Especially of a person, a person's features, etc.: streaked or spotted with dirt; sooty, begrimed.
Late 15th century; earliest use found in Andrew of Wyntoun (c1350–c1422), prior of St Serf's, Lochleven, and historian. From early Scandinavian, of uncertain origin, probably from a suffixed form of the Scandinavian base of Old Icelandic brók trousers, breeches, perhaps initially with reference to the appearance of the markings on an animal.