Recover from series of strokes (5)

I believe the answer is:

rally

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'recover' is the definition.
(I know that rally is a type of recover)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for rally that I've seen before include "Mass political meeting" , "Mass meeting; car race" , "Recover strength after illness" , "Regain one's strength" , "motoring event" .)

I've seen this clue in The Telegraph.

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