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1. A short spike or spiked wheel that attaches to the heel of a rider's boot and is used to urge a horse forward.
2. An incentive: a spur to action.
3. A spurlike attachment or projection, as:
a. A spinelike process on the leg of some birds.
b. A climbing iron; a crampon.
c. A gaff attached to the leg of a gamecock.
d. A short or stunted branch of a tree.
e. A bony outgrowth or protuberance.
4. A lateral ridge projecting from a mountain or mountain range.
5. An oblique reinforcing prop or stay of timber or masonry.
6. Botany A tubular or saclike extension of the corolla or calyx of a flower, as in a columbine or larkspur.
7. An ergot growing on rye.
8. A spur track.
v. spurred, spur·ring, spurs
1. To urge (a horse) on by the use of spurs.
2. To incite or stimulate: "A business tax cut is needed to spur industrial investment" (New York Times).
To ride quickly by spurring a horse.

[Middle English spure, from Old English spura; see sperə- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spurring - a verbalization that encourages you to attempt somethingspurring - a verbalization that encourages you to attempt something; "the ceaseless prodding got on his nerves"
encouragement - the expression of approval and support
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
The outlaw knew it would be futile to pursue him, but yet, so fierce was his anger against this man, that he ordered his band to mount, and spurring to their head, he marched through Middlesex, and crossing the Thames above London, entered Surrey late the same afternoon.
In an instant he was in his saddle and spurring down the valley.
The horse is hot and distressed, but answers to the desperate spurring; the rider looks as if his eyes were glazed by madness, and he saw nothing but what was unseen by others.