Swallow in a single draft (5)

I believe the answer is:

quaff

(Other definitions for quaff that I've seen before include "Drink (something) heartily" , "Drink enthusiastically" , "Drink in large draughts" , "Imbibe" , "Drink deeply or eagerly" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.