[spur] 
,noun, verb, spurred, spur⋅ring.| 1. | a U-shaped device that slips over and straps to the heel of a boot and has a blunt, pointed, or roweled projection at the back for use by a mounted rider to urge a horse forward. |
| 2. | anything that goads, impels, or urges, as to action, speed, or achievement. |
| 3. | climbing iron. |
| 4. | Ornithology. a stiff, usually sharp, horny process on the leg of various birds, esp. the domestic rooster, or on the bend of the wing, as in jacanas and screamers. |
| 5. | Pathology. a bony projection or exostosis. |
| 6. | a sharp piercing or cutting instrument fastened to the leg of a gamecock in cockfighting; gaff. |
| 7. | Physical Geography. a ridge or line of elevation projecting from or subordinate to the main body of a mountain or mountain range. |
| 8. | something that projects and resembles or suggests a gaff; sharp projection. |
| 9. | a short or stunted branch or shoot, as of a tree. |
| 10. | Typography. a short, seriflike projection from the bottom of the short vertical stroke in the capital G in some fonts. |
| 11. | wing dam. |
| 12. | Botany.
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| 13. | Architecture.
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| 14. | Ceramics. a triangular support of refractory clay for an object being fired. |
| 15. | Railroads. spur track. |
| 16. | to prick with or as if with a spur or spurs; incite or urge on: The rider spurred his mount ruthlessly. Appreciation spurs ambition. |
| 17. | to strike or wound with the spur, as a gamecock. |
| 18. | to furnish with spurs or a spur. |
| 19. | to goad or urge one's horse with spurs or a spur; ride quickly. |
| 20. | to proceed hurriedly; press forward: We spurred onward through the night. |
| 21. | on the spur of the moment, without deliberation; impulsively; suddenly: We headed for the beach on the spur of the moment. |
| 22. | win one's spurs, to achieve distinction or success for the first time; prove one's ability or worth: Our team hasn't won its spurs yet. |
spur (spûr)
n.
A spine or projection from a bone.