The dealer's drink (3)
I believe the answer is:
ale
'the dealer's drink' is the definition.
'ale' can be an answer for 'drink' (ale is a kind of drink). I'm not sure about the 'the dealer's' bit.
'the dealer's drink' is the wordplay.
'drink' says the answer is hidden in the clue (I've seen 'drinks' mean this (words in the clue have absorbed the answer)).
'ALE' can be found hidden inside 'the dealers'.
Can you help me to learn more?
(Other definitions for ale that I've seen before include "Intoxicating drink" , "English beer, may be bitter" , "Similar to beer" , "Grog" , "festival" .)