noun
plural spurs
[count] :a sharp pointed object that is attached to the heel of a horse rider's boot and that is pressed into the horse's side to make the horse go faster
[singular] :something that makes you want to do something or that causes something to happen :incentive - often + to
[count] :a mass of sharp rock on the side of a mountain
[count] :a short section of railway track that leads from the main line
on/at the spur of the moment
If something is done on/at the spur of the moment, it is done immediately without planning.
win/earn your spurs
to do something which shows that you deserve to be respected or noticed
verb
spurs; spurred; spurring
[+ obj] to encourage (someone) to do or achieve something
to cause (something) to happen or to happen more quickly
to urge (a horse) to go faster by pushing spurs into its sides