Shade article put into forge (6)
I believe the answer is:
canopy
'shade' is the definition.
(thesaurus)
'article put into forge' is the wordplay.
'article' becomes 'an' (indefinite article).
'put into' means one lot of letters goes inside another.
'forge' becomes 'copy'.
'an' put into 'copy' is 'CANOPY'.
(Other definitions for canopy that I've seen before include "Awning - roofed structure" , "Cockpit cover" , "Ceremonial covering" , "Cover above four-poster" , "Covering over four-poster, etc" .)