firstborn first blush • first-born · · · Info · Definitions · Synonyms · Characters · · firstborn · · Text Latin · · Script 9 · · Length 2 · · Syllables Definitions · · · (noun) the offspring who came first in the order of birth. Synonyms: eldest. · · Noun Definition 1 (adj) first in order of birth. Synonyms: eldest. Example: "The firstborn child." · · Adjective Definition 1 Synonyms · · · eldest · · Synonym 1 Characters · · b latin small letter b U+0062 f latin small letter f U+0066 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074