Take home unopened tea service (4)
I believe the answer is:
earn
'take home' is the definition.
(I've seen this before)
'unopened tea service' is the wordplay.
'unopened' means to remove the first letter.
'service' becomes 'rn' (abbreviation for Royal Navy).
'tea' with its first letter taken away is 'ea'.
'ea'+'rn'='EARN'
(Other definitions for earn that I've seen before include "Deserve - merit" , "Near (anag.)" , "make bread?" , "Take home" , "Gain (money, reputation, etc)" .)