Smoking device (4)
I believe the answer is:
pipe
'smoking device' is the definition.
'pipe' can be an answer for 'device' (pipe is a kind of device). I also know that 'smoking' relates to this answer.
This is all the clue.
(Other definitions for pipe that I've seen before include "Wine cask; sing shrilly" , "two hogsheads of wine" , "Tube; large cask" , "Meerschaum" , "chanter" .)