flun ‧ key BrE AmE , flunky /ˈflʌŋki/ noun [countable] informal
[ Date: 1700-1800 ; Origin: Perhaps from flanker 'someone who stands beside you' (18-19 centuries) , from ⇨ ↑ flank 1 ]
someone who does small jobs for an important person, especially someone who does this because they are trying to please the person – used to show disapproval:
One of his flunkeys let me in.