Servant blowing top gets help (3)
I believe the answer is:
aid
'help' is the definition.
(synonyms)
'servant blowing top' is the wordplay.
'servant' becomes 'maid' (maid is a kind of servant).
'blowing top' means to remove the first letter.
'maid' with its initial letter taken off is 'AID'.
'gets' acts as a link.
(Other definitions for aid that I've seen before include "Care, assistance" , "grant" , "Help or support" , "Relief" , "charity" .)