"Them"
'them' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for enemy that I've seen before include "Antagonist" , "Armed adversary" , "is against us" , "Division" , "Rival" .)
'them' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for they that I've seen before include "Third person plural" , "Pronoun for more than one" , "Do -- Know It's Christmas (Band Aid)" , "People in general" , "People generally" .)