Not a lot covered up by Kate Moss (4)
I believe the answer is:
some
This clue could be a double definition.
'not a lot' is the first definition.
(I've seen this in another clue)
'covered up by kate moss' is the second definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs sometimes define each other.
Can you help me to learn more?
(Other definitions for some that I've seen before include "certain" , "Unknown or unspecified amount or number" , "Hard work" , "An unspecified quantity, not all" , "Part" .)