Stop luggage item with E inside (5)
I believe the answer is:
cease
'stop' is the definition.
(I know that stop can be written as cease)
'luggage item with e inside' is the wordplay.
'luggage item' becomes 'cee' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'with' means one lot of letters goes inside another.
'e' becomes 'east' (synonyms).
'inside' indicates the central letters.
The central letters of 'east' are 'as'.
'cee' going around 'as' is 'CEASE'.
Can you help me to learn more?
(Other definitions for cease that I've seen before include "Political group" , "Stop, terminate" , "Stop, give over" , "Discontinue" , "Finish, end" .)