Shabrack or Shabraque (çaprak) is a saddlecloth, formerly used by European light cavalry. The shabraque was an accoutrement of the hussar cavalry, based on the Hungarian horsemen in Austrian service who were widely imitated in European armies in the 18th and 19th centuries. The shabraque was a large cloth which in its original form, covered the H...
saddle cloth
• (n.) The saddlecloth or housing of a cavalry horse.
Shab'rack noun [ Turk. tshāprāk , whence French chabraque , German shabracke .] (Mil.) The saddlecloth or housing of a cavalry horse. 
A shabrack is the saddlecloth or housing of a cavalry horse.