Tremor, wanting hard drink (4)
I believe the answer is:
sake
'drink' is the definition.
(sake is a kind of drink)
'tremor wanting hard' is the wordplay.
'tremor' becomes 'shake'.
'wanting' indicates named letters should be taken away (to want something can mean to lack it or need it).
'hard' becomes 'h'.
'shake' with 'h' taken away is 'SAKE'.
(Other definitions for sake that I've seen before include "Jap. alcoholic drink from rice; for Pete's -" , "account" , "Benefit - Japanese liquor" , "Japanese rice alcohol" , "Japanese alcoholic drink made from rice" .)