noun A rigid implement, often roughly y-shaped, that is fixed to one's heel for the purpose of prodding a horse. Often worn by, and emblematic of, the cowboy or the knight.
noun A jab given with the spurs.
noun Anything that inspires or motivates, as a spur does a horse.
noun An appendage or spike pointing rearward, near the foot, for instance that of a rooster.
noun Any protruding part connected at one end, for instance a highway that extends from another highway into a city.
noun Roots, tree roots.
noun A mountain that shoots from another mountain or range and extends some distance in a lateral direction, or at right angles.
noun A spiked iron worn by seamen upon the bottom of the boot, to enable them to stand upon the carcass of a whale to strip off the blubber.