From WordNet (r) 2.0 (August 2003) [wn]:
Johnson
n 1: English writer and lexicographer (1709-1784) [syn:
Johnson, Samuel Johnson, Dr. Johnson]
2: 36th President of the United States; was elected Vice
President and succeeded Kennedy when Kennedy was
assassinated (1908-1973) [syn: Johnson, {Lyndon
Johnson}, Lyndon Baines Johnson, LBJ, {President
Johnson}, President Lyndon Johnson]
3: 17th President of the United States; was elected Vice
President and succeeded Lincoln when Lincoln was
assassinated; was impeached but acquitted by one vote
(1808-1875) [syn: Johnson, Andrew Johnson, {President
Johnson}, President Andrew Johnson]