a device with a small spike or a spiked wheel that is worn on a rider's heel and used for urging a horse forward

a thing that prompts or encourages someone; an incentive

wars act as a spur to practical invention

a projection from a mountain or mountain range

it's an easy walk up the spur that leads to the summit

a small, single-pointed support for ceramic ware in a kiln

urge (a horse) forward by digging one's spurs into its sides

she spurred her horse towards the hedge

give an incentive or encouragement to (someone)

her sons' passion for computer games spurred her on to set up a software business

prune in (a side shoot of a plant) so as to form a spur close to the stem

spur back the lateral shoots