bangtail(n = noun.animal) race horse, racehorse - a horse bred for racing;
is a kind of equus caballus, horse
has particulars: thoroughbred, pony, yearling, two-year-old horse, two year old, three-year-old horse, three year old, dark horse, mudder, nonstarter, pacemaker, pacer, pacesetter, trotter, trotting horse
a horse bred for racing. [WordNet 1.5]
bangtail, n. a horse, esp. with its tail cut straight across.
Idiom:
bangtail muster Austral. the counting of cattle involving cutting across the tufts at the tail-ends as each is counted.