Sinclair

[sin-klair, sing- or for 1, 2, 4, sin-klair, sing-] /sɪnˈklɛər, sɪŋ- or for 1, 2, 4, ˈsɪn klɛər, ˈsɪŋ-/
noun
1.
Harry Ford, 1876–1956, U.S. oil businessman: a major figure in the Teapot Dome scandal.
2.
May, 1865?–1946, British novelist.
3.
Upton (Beall)
[uhp-tuh n bel] /ˈʌp tən bɛl/ (Show IPA),
1878–1968, U.S. novelist, socialist, and reformer.
4.
a male given name: a family name taken from a French placename, Saint Clair.
British Dictionary definitions for Sinclair

Sinclair

/sɪŋˈklɛə; ˈsɪŋklɛə/
noun
1.
Sir Clive (Marles). born 1940, English electronics engineer, inventor, and entrepreneur, who produced such electronic goods as pocket calculators and some of the first home computers; however, the Sinclair C5 (1985), a small light electric vehicle for one person, proved a commercial failure
2.
Upton (Beall). 1878–1968, US novelist, whose The Jungle (1906) exposed the working and sanitary conditions of the Chicago meat-packing industry and prompted the passage of food inspection laws