Stole keys, pinching ring (3)
I believe the answer is:
boa
'stole' is the definition.
(both can mean a type of scarf)
'keys pinching ring' is the wordplay.
'keys' becomes 'ba' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'pinching' indicates putting letters inside (taking inside).
'ring' becomes 'O' (O is the shape of a ring).
'ba' going around 'o' is 'BOA'.
Can you help me to learn more?
(Other definitions for boa that I've seen before include "Long, thin, feathery scarf" , "Large constricting snake" , "One with scaly body" , "S American snake that crushes its prey" , "that's dangerous for South Americans" .)