Ending in suitcase, a number put away (5)
I believe the answer is:
eaten
'put away' is the definition.
(I've seen this in another clue)
'ending in suitcase a number' is the wordplay.
'ending in' suggests the final letters.
'number' becomes 'ten' (ten is a kind of number).
The final letter of 'suitcase' is 'e'.
'e'+'a'+'ten'='EATEN'
(Other definitions for eaten that I've seen before include "Scoffed" , "corroded" , "absorbed in the system" , "Devoured" , "Consumed" .)