Horse with guts
It is called gualdrapa to the cloth that is put on the saddle and the mule of the mule or on the horse so that the mud does not splash the gentleman or does not disturb the dust, the sweat or the own hair of the animal . It is called gualdrapilla to that of smaller extension that does not descend beyond the stirrup. By extension they are called gualdrapas to the pieces that hang of the badly composed clothes, scruffy and dirty.
Possibly, it is a corrupted term of guardapa or guardapié since the 1 and r have been interchanged often in the history of the language.
From the origin and beginning of the Castilian language, Sebastián de Covarrubias, 1673
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