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half brother

half-brother

noun

  1. the son of either of one's parents by another partner
“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
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Word History and Origins

Origin of half brother1

Middle English word dating back to 1300–50
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Compare Meanings

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