But at the Turk’s Head, might it not contain water? (4)
I believe the answer is:
butt
'might it not contain water?' is the definition.
I can't judge whether this definition defines the answer.
'but at the turk's head' is the wordplay.
'at' means one lot of letters go next to another.
'head' says to take the initial letters.
The initial letter of 'turks' is 't'.
'but'+'t'='BUTT'
Can you help me to learn more?
(Other definitions for butt that I've seen before include "Attack" , "Victim of ridicule" , "End of stock" , "bum..." , "Water-cask; object of derision" .)