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Adjective: firstborn  'furst'born
  1. First in order of birth
    "the firstborn child";
    - eldest
Noun: firstborn  'furst'born
  1. The offspring who came first in the order of birth
    "As the firstborn, she felt responsible for her younger siblings";
    - eldest

Derived forms: firstborns

See also: 1st, first

Type of: issue [formal], offspring, progeny

Encyclopedia: Firstborn