Impermeable form of soil of some kind? (7)
I believe the answer is:
oilskin
'impermeable form' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'soil of some kind?' is the wordplay.
I cannot quite see how this works, but
an anagram of 'soil' is 'oils' which is within the answer.
The remaining letters 'kin' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for oilskin that I've seen before include "material" , "Waterproof garment" , "Raincoat" , "Heavy waterproofed cloth" , "Waterproof cloth as for sailors" .)