spur noun

1 on horse rider's boots

QUANT. pair

VERB + SPUR dig in/into, put/set to He dug his spurs into the horse's flank and cantered off.

2 encouragement

ADJ. great, powerful, strong

VERB + SPUR act as, be | give (sb), provide (sb with)

PREP. ~ for The research provided a spur for reform. | ~ to a spur to action