Drinking bout in a car (3)

I believe the answer is:

jag

This clue is a double definition.

'drinking bout' is the first definition.
(I've seen this in another clue)

'car' is the second definition.
(short for Jaguar)

'in a' acts as a link.

(Another definition for jag that I've seen is " Cut unevenly; drinking bout".)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app