society > leisure > sport > types of sport or game > racing or race > horse racing > [noun] > training or exercise run (3)
A run given to a race-horse by way of exercise in preparation for a race. Obsolete.
A fit of sweating caused for a specific purpose. A run given to a horse (often in a coat) as part of his training for a race.
That has been stripped, in senses of the verb stripped gallop, a gallop given a racehorse when ‘stripped’.