Noun: birthday 'burth,dey
- An anniversary of the day on which a person was born (or the celebration of it)
"They threw a surprise party for her 30th birthday"
- The date on which a person was born
"He always took the day off work on his birthday";
- natal day [archaic]
Derived forms: birthdays
Type of: anniversary, date, day of remembrance, day of the month
Encyclopedia: Birthday, Deathday and Other Stories