Tom boozes regularly, producing a bit of wind (4)
I believe the answer is:
oboe
'a bit of wind' is the definition.
(type of wind instrument)
'tom boozes regularly' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'tom'+'boozes'='tomboozes'
The alternate letters of 'tomboozes' are 'OBOE'.
'producing' is the link.
(Other definitions for oboe that I've seen before include "Musical instrument" , "Player" , "Orchestral instrument" , "Slender double-reed instrument" , "music producer" .)