A horse which has been trained to assist its rider in managing livestock by separating selected animals from a herd.

A horse whose blood or lineage is derived from the purest and most highly prized stock (typically a Thoroughbred or Arabian)

Any ant of the species Formica rufa.

(nautical, slang) An awkward, lubberly person. / (nautical, slang) One of a mythical body of marine cavalry, for whom wild flights of imagination are best reserved.

A type of large pistol carried on the pommel of a saddle while riding.

(Scotland) The kelpie

(American spelling) A horse used for muscular work, other than carrying a rider and/or load, such as pulling a cart, plow or log.

(Canada, US, vulgar, idiomatic) A jerk; an unpleasant, unlikable person; an asshole. / (Canada, US, vulgar, idiomatic) A thing or person which is visually unappealing.

Britain standard spelling of draft horse.

plural of horse's mouth