Crossword Genius

Lots sold here? (7)

Ross

I believe the answer is:

auction

I'm a little stuck... Click here to teach me more about this clue!

'lots sold here?' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

This is the entire clue.

Can you help me to learn more?

(Other definitions for auction that I've seen before include "Caution about method of sale" , "Public bidding sale" , "Public sale at which bids are made" , "Lots are sold here!" , "Competitive sale" .)

I've seen this clue in The Sun.
Want a hint initially instead of a full solution? Install my app