birthday birthbed • birthland · · · Info · Definitions · Synonyms · Characters · · birthday · · Text Latin · · Script 8 · · Length Definitions · · · (noun) an anniversary of the day on which a person was born (or the celebration of it). · · Noun Definition 1 (noun) the date on which a person was born. Synonyms: natal day. · · Noun Definition 2 Synonyms · · · natal day · · Synonym 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 h latin small letter h U+0068 i latin small letter i U+0069 r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079