Include unusual transaction star omitted (7)
I believe the answer is:
contain
'include' is the definition.
(containing is a kind of including)
'unusual transaction star omitted' is the wordplay.
'unusual' indicates anagramming the letters.
'omitted' indicates named letters should be taken away.
'transaction' with 'star' taken out is 'naction'.
'naction' is an anagram of 'CONTAIN'.
(Other definitions for contain that I've seen before include "Keep within limits or have within" , "Carry" , "Control, restrain" , "keep within bounds" , "Enclose" .)