An "apple polisher" is one who gives gifts to win friendship or special treatment. It is not exactly a bribe, but is close to it.
Mary is an apple polisher — she can even handle illegal documents for the boss.
Mary is an apple polisher.
Apple shiner (apple polisher)
He gets high scores by being an apple polisher.
Jane: she is a real apple polisher. She crawls around the boss all day. No wonder she could win.
Mary is an apple polisher; she will do anything for the boss.