noun
a slippery or oily substance
verb
to bribe or pay someone in order to gain favor or influence
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It is unethical to grease the palm of government officials in exchange for favors.
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I heard that some people try to grease the palm of the security guards to get into the event without a ticket.
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I'll grease the palm of the bouncer to let us skip the line at the club.
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Sometimes you need to grease the palm of fate to get the luck on your side.