Jefferson UK /ˈd͡ʒɛfəsən/US /ˈd͡ʒɛfɚsən/ noun2 •(US, slang) A two-dollar bill."Gambling's not my form of masochism," said Carl. "Huh?" "So how much?" "The wad's mostly ones. Some Jeffersons. Two or three Abes." — 1996 •Ellipsis of Jefferson City. formsJeffersons