Side of shoe some jumping whippets nip (6)
I believe the answer is:
instep
'side of shoe' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'some jumping whippets nip' is the wordplay.
'jumping' says the letters should be written in reverse (in a down clue, letters jump up).
'some' indicates a hidden word (some of the parts of the word are used).
'petsni' is hidden in the letters of 'whippets nip'.
'petsni' in reverse letter order is 'INSTEP'.
Can you help me to learn more?
(Other definitions for instep that I've seen before include "One part of Oxford" , "Foot arch - conforming" , "Part of foot/shoe" , "Part of foot (how to march!)" , "Arched part of foot" .)