Sort of skirt mum gets, at least (4)
I believe the answer is:
mini
'sort of skirt' is the definition.
(I know that mini is a type of skirt)
'mum gets at least' is the wordplay.
I cannot quite see how this works, but
'at' could be 'in' (synonymous in some cases - eg at school, in school) and 'in' is found within the answer.
The remaining letters 'mi' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for mini that I've seen before include "type of garment" , "Cult British car" , "Car designed by Issigonis" , "Italian Job car?" , "vehicle" .)