Sally runs with help (4)
I believe the answer is:
raid
'sally' is the definition.
(both can mean a military attack)
'runs with help' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'with' says to put letters next to each other.
'help' becomes 'aid' (synonyms).
'r'+'aid'='RAID'
(Other definitions for raid that I've seen before include "Assault, attack" , "Sudden swift attack" , "Sudden and surprise attack" , "Surprise police visit" , "Go on the attack" .)