Panda one of four young in pit (5,3)
I believe the answer is:
squad car
'panda' is the definition.
(I've seen this before)
'one of four young in pit' is the wordplay.
'one of four young' becomes 'quad' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' is an insertion indicator.
'pit' becomes 'scar' (synonyms).
'quad' inserted into 'scar' is 'SQUAD CAR'.
Can you help me to learn more?
(Other definitions for squad car that I've seen before include "vehicle from station" , "Police patrol vehicle" , "Force vehicle" , "panda perhaps" , "transport for cops" .)