The drink a teetotaller put in a trunk? (6)
I believe the answer is:
bottle
'the drink' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'a teetotaller put in a trunk?' is the wordplay.
'a teetotaller' becomes 'tt' (abbreviation).
'put in' is an insertion indicator.
'a trunk?' becomes 'bole' (I've seen this in another clue).
'tt' going within 'bole' is 'BOTTLE'.
Can you help me to learn more?
(Other definitions for bottle that I've seen before include "Preserve" , "Vessel - nerve" , "Type of marine mammal" , "Glass container or slangy courage" , "The spirit" .)