Regularly clean dulled spoon (5)
I believe the answer is:
ladle
'spoon' is the definition.
(thesaurus)
'regularly clean dulled' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'clean'+'dulled'='cleandulled'
The alternate letters of 'cleandulled' are 'LADLE'.
(Other definitions for ladle that I've seen before include "Deep-bowled spoon" , "It's used to serve soup" , "Long-handled spoon for serving soup" , "Scoop" , "Serving implement" .)