Onassis

[oh-nas-is, oh-nah-sis]

noun

Aristotle Socrates,1906–75, Greek businessman, born in Turkey.
Jacqueline (Lee Bou·vi·er Kennedy) [boo-vee-ey] /ˈbu viˌeɪ/, Jackie, 1929–94, wife of John F. Kennedy (1953–63) and Aristotle Onassis (1968–75).

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British Dictionary definitions for onassis

Onassis

noun

Aristotle (Socrates). 1906–75, Argentinian (formerly Greek) shipowner, born in Turkey. In 1968 he married Jacqueline, 1929–94, the widow of US President John F. Kennedy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012