Stumble over words in Pigalle on consuming litres (4)
I believe the answer is:
slur
'stumble over words' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'pigalle on consuming litres' is the wordplay.
I cannot quite see how this works, but
'litres' could be 'l' (abbreviation) and 'l' is located in the answer.
The remaining letters 'sur' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Other definitions for slur that I've seen before include "Disparage" , "Slight - stain" , "Disparaging comment" , "Speak indistinctly, as a drunk might" , "Mumble words - it's an affront" .)