Definition of "Spur" :

noun: a railway line connected to a trunk line

noun: a sharp prod fixed to a rider's heel and used to urge a horse onward

"Cowboys know not to squat with their spurs on."

noun: a verbalization that encourages you to attempt something

noun: tubular extension at the base of the corolla in some flowers

noun: any sharply pointed projection

verb: goad with spurs

"The rider spurred his horse."

verb: equip with spurs

"Spur horses."

verb: strike with a spur

verb: give heart or courage to

verb: incite or stimulate

"The Academy was formed to spur research."