plural of spur
"The rider kicked his heels against the horse's flanks to urge it forward with spurs."
Third-person singular simple present indicative form of spur
"The coach shouts to spurs his team on during the final minutes of the game."
In plain English: To spur something means to push it forward quickly by giving extra energy or encouragement.
"The manager gave his team some new spurs to get them working harder before the big game."
Tottenham Hotspur Football Club
"The SPURS experiment aims to understand how salinity changes affect ocean circulation and climate patterns."
Acronym of Salinity Processes in the Upper Ocean Regional Study.