Sinclair

UK: /sɪŋˈklɛə/, /ˈsɪŋklɛə/

US: (sin klâr′, sing- or, for 1, 2, 4, sin′klâr, sing′-)

WordReference Random House Unabridged Dictionary of American English © 2026

Sin•clair  (sin klâr′, sing- or, for 1, 2, 4, sin′klâr, sing′-), n. 

1. Biographical Harry Ford, 1876–1956, U.S. oil businessman: a major figure in the Teapot Dome scandal.
2. Biographical May, 1865?–1946, British novelist.
Up•ton (Beall)  (up′tən bel), 1878–1968, U.S. novelist, socialist, and reformer.
3. a male given name: a family name taken from a French placename, Saint Clair.

Collins Concise English Dictionary © HarperCollins Publishers::

Sinclair / sɪŋˈklɛə ˈsɪŋklɛə/ noun

1. Sir Clive (Marles). 1940–2021, 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