half brother
noun
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half brother
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half-brother
half-brothernounthe son of either of one's parents by another partner
half brother
Americannoun
half-brother
British
noun
Usage
What does half brother mean? A half brother is a brother who is related to his sibling(s) through only one parent. This typically means that they share only one biological parent (not both). For example, when a person’s parent has a son with another partner (who is not the person’s parent), the son is considered the person’s half brother. The term half sister is used in the same way. Half-sibling is a gender-neutral way of saying the same thing. In contrast, the words stepbrother, stepsister, and stepsibling refer to those who have a sibling relationship (often based on the remarriage of their parents to other partners) but who do not share a biological parent. The word half in half brother and its related terms only refers to the biological relationship. Half brothers may have close relationships with their siblings, and many people simply call their half brother their brother. Modifiers such as maternal and paternal are sometimes used to specify which biological parent the siblings have in common. Example: Over the holidays, I got together with my maternal half brother and my paternal half sister and we had a great time.
Etymology
Origin of half brother
Middle English word dating back to 1300–50
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Half brother to last year's Derby winner Super Saver, also trained by Pletcher.
From Newsweek • Feb. 14, 2011
Half brother Leon Brown, 46, was later freed from Maury Correctional Institution near Greenville, where he was serving a life term.
From Washington Post
"Half brother," corrected Thurston, as he swung up into the saddle.
From The Lure of the Dim Trails by Bower, B. M.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
