Play securing new award (4)
I believe the answer is:
tony
'award' is the definition.
(the Tonys are theatre awards)
'play securing new' is the wordplay.
'play' becomes 'toy' (synonyms).
'securing' means one lot of letters goes inside another.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'toy' enclosing 'n' is 'TONY'.
(Other definitions for tony that I've seen before include "- Curtis, US actor" , "Classy" , "Blair; having style (slang)" , "Broadway award for excellence in the theatre" , "Boy" .)