Jef·fer·son /ˈʤɛfɚ/
  男子名[美國第3任總統]
  Jefferson
       n : 3rd President of the United States; chief drafter of the
           Declaration of Independence; made the Louisiana Purchase
           in 1803 and sent out the Lewis and Clark Expedition to
           explore it (1743-1826) [syn: Thomas Jefferson, President
           Jefferson]