Source : Webster's Revised Unabridged Dictionary (1913)

Spur \Spur\, v. t. [imp. & p. p. {Spurred}; p. pr. & vb. n.
   {Spurring}.]
   1. To prick with spurs; to incite to a more hasty pace; to
      urge or goad; as, to spur a horse.

   2. To urge or encourage to action, or to a more vigorous
      pursuit of an object; to incite; to stimulate; to
      instigate; to impel; to drive.

            Love will not be spurred to what it loathes. --Shak.

   3. To put spurs on; as, a spurred boot.

Spurred \Spurred\, a.
   1. Wearing spurs; furnished with a spur or spurs; having
      shoots like spurs.

   2. Affected with spur, or ergot; as, spurred rye.

   {Spurred corolla} (Bot.), a corolla in which there are one or
      more petals with a spur.

Source : WordNet®

spur
     n 1: a verbalization that encourages you to attempt something;
          "the ceaseless prodding got on his nerves" [syn: {goad},
           {goading}, {prod}, {prodding}, {urging}, {spurring}]
     2: any pointed projection [syn: {spine}]
     3: tubular extension at the base of the corolla in some flowers
     4: 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" [syn: {gad}]
     5: a railway line connected to a trunk line [syn: {branch line},
         {spur track}]
     [also: {spurring}, {spurred}]

spur
     v 1: incite or stimulate; "The Academy was formed to spur
          research"
     2: give heart or courage to [syn: {goad}]
     3: strike with a spur
     4: goad with spurs; "the rider spurred his horse"
     5: equip with spurs; "spur horses"
     [also: {spurring}, {spurred}]

spurred
     See {spur}