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Related to palm oil: coconut oil
slang A favor or an amount of money given to someone in order to get what one wants; a bribe. Derived from the phrase "grease/oil someone's palm," meaning to give someone a bribe. Of course we can get the city council to approve of our plan. All we need is a little palm oil.
n. a bribe; a tip. How much palm-oil does it take to get this deed recorded in reasonable time?