grease (one's) hand(redirected from greased their hand)
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grease (one's) hand
To bribe someone discreetly by slipping money into their hand. A: "How are we going to get a table without a reservation?" B: "Don't worry, I greased the hostess' hand, and she promised us a table in no time." I greased my brother's hand to stop him from telling mom that I had a party while she was away.