Spur
WordNet
noun
(1) A railway line connected to a trunk line
(2) 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"
(3) A verbalization that encourages you to attempt something
"The ceaseless prodding got on his nerves"
(4) Tubular extension at the base of the corolla in some flowers
(5) Any sharply pointed projection
verb
(6) Goad with spurs
"The rider spurred his horse"
(7) Equip with spurs
"Spur horses"
(8) Strike with a spur
(9) Give heart or courage to
(10) Incite or stimulate
"The Academy was formed to spur research"