firstborn

American

[furst-bawrn] / ˈfɜrstˈbɔrn /

adjective

first in the order of birth; eldest.

noun

a firstborn child.
a first result or product.

Etymology

Origin of firstborn

Middle English word dating back to 1300–50; first, born

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.

The album's central theme is the ecstasy and chaos of fatherhood, with Dijon addressing the title track to his firstborn, then imploring his wife to expand the family on the subtly-titled Another Baby!

From BBC • Dec. 20, 2025

"We came here from Ukraine, and Matilda was our firstborn here in Australia," he said earlier this week.

From Barron's • Dec. 18, 2025

Vaill calls firstborn Angelica an “alpha female” who adored her younger sister but wondered, How’d she get him?

From Slate • Oct. 21, 2025

At our YMCA’s “toddler time,” my firstborn son had only a passing interest in the nylon tunnels and scooter boards.

From The Wall Street Journal • Sep. 25, 2025

Everyone was stunned that I dared openly defy a powerful noble’s firstborn son.

From "The Name of the Wind" by Patrick Rothfuss

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023