From Longman Dictionary of Contemporary Englishhirelinghire‧ling /ˈhaɪəlɪŋ $ ˈhaɪr-/ noun [countable] old-fashioned BOWORKERsomeone who will work for anyone who will pay them – used to show disapproval
Examples from the Corpus
hireling• Now that new army marched against the scum of Britain and the hirelings of Prussia. 