Definition: the offspring who came first in the order of birth
Similar words: offspring, issue, progeny
Definition: the immediate descendants of a person
Usage: she was the mother of many offspring; he died without issue
Definition: first in order of birth
Usage: the firstborn child
Similar words: first
Definition: preceding all others in time or space or degree
Usage: the first house on the right; the first day of spring; his first political race; her first baby; the first time; the first meetings of the new party; the first phase of his training