Maiden has help (3)
I believe the answer is:
aid
'help' is the definition.
(synonyms)
'maiden has' is the wordplay.
'has' says the answer is hidden in the clue.
'AID' can be found hidden inside 'maiden'.
(Other definitions for aid that I've seen before include "Help or succour" , "Help, assistance" , "Care and help" , "technique that can produce pregnancy" , "Relief" .)