noun An individual skilled in the art of seduction using verbal skills; a seducer
She left with him; he must be a true mack.
noun A pimp or procurer
verb To act as pimp; to pander.
verb To seduce or flirt with.
noun A (pouch or unit of) mackerel, used as food and currency in prison.
noun A raincoat or mackintosh.
noun An element of a ship's superstructure which places the function of a ship's mast on its exhaust stack, adding the skeletal supporting structure to the smokestack to support the mast's complement of functions.