firstborn

/ˈfɜrstˌbɔrn/
noun
  1. The first child born to a person or couple.
    • In many cultures, the firstborn inherits the family estate.
    • Their firstborn arrived on a snowy morning in December.
    • As the firstborn, she often felt responsible for her younger siblings.
Antonyms
adjective
  1. Born first in a family; eldest.
    • Her firstborn son is now a doctor.
    • He is the firstborn of four brothers.
    • The firstborn child often gets more attention from parents.
Synonyms
What does "firstborn" mean? | whatsthatwordmean | whatsthatwordmean