(a Fr. word, the origin of which is doubtful, meaning the wheeling about of a horse; in Spanish and Portuguese caracol means a snail with a spiral shell), a turn or wheeling in horsemanship to the left or right, or to both alternately, so that the movements of the horse describe a zig-zag course. The term has been used loosely and erroneously to describe any display of fancy riding. It is also used for a spiral staircase in a tower.