Chill pitcher regularly (3)
I believe the answer is:
ice
'chill' is the definition.
(I know that ice is a more specific form of chill)
'pitcher regularly' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
The alternating letters of 'pitcher' are 'ICE'.
(Other definitions for ice that I've seen before include "Diamonds (slang)" , "Winter formation" , "Block" , "Chill - harden" , "Formality" .)