From WordNet (r) 3.0 (2006) [wn]:
Ali
n 1: United States prizefighter who won the world heavyweight
championship three times (born in 1942) [syn: Ali,
Muhammad Ali, Cassius Clay, Cassius Marcellus Clay]
2: the fourth caliph of Islam who is considered to be the first
caliph by Shiites; he was a cousin and son-in-law of
Muhammad; after his assassination Islam was divided into
Shiite and Sunnite sects