Mash, a drink given to horses. - It is prepared by infusing half a peck of ground malt in a sufficient quantity of boiling water, then agitating the liquor, till it acquires a sweet taste, and when lukewarm, administering it to the animal.

This preparation is used generally after a purge, in order to promote its operation ; and, after hard work; or, as a substitute for drink, when a horse labours under depressing sickness.