birthday
noun
an anniversary of the day on which a person was born (or the celebration of it)
the date on which a person was born
Synonymsnatal day
Source: WordNet 3.1, Princeton University
Birthday meaning
What does “birthday” mean? Definitions, examples, synonyms and opposites.
“birthday” is a noun with 2 meanings. Its most common meaning is: an anniversary of the day on which a person was born (or the celebration of it).