Crossword Genius

Run to join forces and gain strength (5)

Ross

I believe the answer is:

rally

'gain strength' is the definition.
(thesaurus)

'run to join forces' is the wordplay.
'run' becomes 'r' (cricket abbreviation).
'to join forces' becomes 'ally' (I've seen this before).
'r'+'ally'='RALLY'

'and' is the link.

(Other definitions for rally that I've seen before include "Call to arms - series of strokes" , "Get-together" , "Mass meeting -- revive" , "Recover health" , "exchange over the Net?" .)

I've seen this clue in The Guardian.
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