Cot sent over to parent in the east, is a liability (4)
I believe the answer is:
debt
'liability' is the definition.
(a debt is something someone is legally liable for)
'cot sent over to parent in the east' is the wordplay.
'cot' becomes 'bed' (cot is a type of bed).
'sent over' is a reversal indicator.
'to parent in the east' becomes 't' (I can't explain this - if you can you should believe this answer much more).
'bed' backwards is 'deb'.
'deb'+'t'='DEBT'
'is a' is the link.
Can you help me to learn more?
(Other definitions for debt that I've seen before include "state of obligation" , "sense of gratitude" , "Money owed or due" , "outstanding" , "Sum of money that's owed" .)