See instruments originally used in Enigma variation? (7)
I believe the answer is:
imagine
'see' is the definition.
(I know that see is a more specific form of the action imagine)
'instruments originally used in enigma variation?' is the wordplay.
'originally used' says to take the initial letters.
'in' indicates putting letters inside.
'variation?' is an anagram indicator (I've seen 'variations' mean this).
The initial letter of 'instruments' is 'i'.
'enigma' with letters rearranged gives 'imagne'.
'i' put into 'imagne' is 'IMAGINE'.
(Other definitions for imagine that I've seen before include "Picture, conceive" , "that Lennon composed" , "Suspect" , "Picture mentally" , "Believe to be so, suppose" .)