Bartender loses bet - in the run where someone is expected to collect (6)
I believe the answer is:
errand
'collect' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for errand that I've seen before include "A little job" , "run one" , "Short journey to get or carry message" , "short shopping trip" , "light task" .)