WordNet (r) 3.0 (2006):

Simpson
    n 1: United States divorcee whose marriage to Edward VIII
         created a constitutional crisis leading to his abdication
         [syn: Simpson, Mrs. Simpson, Wallis Warfield Simpson,
         Wallis Warfield Windsor, Duchess of Windsor]
    2: Scottish obstetrician and surgeon who pioneered in the use of
       ether and discovered the anesthetic effects of chloroform
       (1811-1870) [syn: Simpson, Sir James Young Simpson]