Crossword Genius

Soccer team in historic battle (5)

Ross

I believe the answer is:

spurs

I'm a little stuck... Click here to teach me more about this clue!

'soccer team' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for spurs that I've seen before include "One side of London" , "incentives" , "Goads" , "Kicks out" , "soccer team" .)

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