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firstborn

[ furst-bawrn ]
/ ˈfɜrstˈbɔrn /
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See synonyms for: firstborn / firstborns on Thesaurus.com

adjective
first in the order of birth; eldest.
noun
a firstborn child.
a first result or product.
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Origin of firstborn

Middle English word dating back to 1300–50; see origin at first, born
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use firstborn in a sentence

British Dictionary definitions for firstborn

first-born

adjective
eldest of the children in a family
noun
the eldest child in a family
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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