Lots of wives knocked down here? (5,7)
I believe the answer is:
dutch auction
'wives knocked down here?' is the definition.
The definition suggests a singular noun which matches the answer.
'lots of' is the wordplay.
I cannot really understand how this works, but
'lots' could be 'd' and 'd' is found in the answer.
'of' could be 'o' and 'o' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dutch auction that I've seen before include "At which prices are gradually lowered" , "for lots in Amsterdam?" , "progressively lower prices" , "Where the price bid is lowered by stages" .)