birthday
noun
- day on which one or more years ago someone appeared in the world
Wiktionary
Pronunciation: /ˈbɜːθ.deɪ/ / /ˈbɜːθ.dei/ / /ˈbɝθˌdeɪ/
noun
Etymology: From Middle English birthdai, birtheday, from Old English ġebyrddæġ (“birthday”), influenced by Old Norse burðr, equivalent to birth + day. Compare Saterland Frisian Gebuursdai (“birthday”), Dutch geboortedag (“birthday”), Low German Geboortsdag (“birthday”), German Geburtstag (“birthday”), Norwegian bursdag, gebursdag (“birthday”). Eclipsed non-native Middle English nativitee (“birth, nativity, birthday”), from Old French nativité, nativited, from Latin nātīvitas.
- The anniversary of the day on which someone is born.
“When's your birthday? Mine's on April 1.”
“I'll be thirty-seven (years old) next birthday.”
- The anniversary of the day on which something is created.
- The date on which someone is born or something is created, more commonly called birthdate or date of birth.
- A birthday party.
“I'd like to invite you all to my birthday.”
verb
Etymology: From Middle English birthdai, birtheday, from Old English ġebyrddæġ (“birthday”), influenced by Old Norse burðr, equivalent to birth + day. Compare Saterland Frisian Gebuursdai (“birthday”), Dutch geboortedag (“birthday”), Low German Geboortsdag (“birthday”), German Geburtstag (“birthday”), Norwegian bursdag, gebursdag (“birthday”). Eclipsed non-native Middle English nativitee (“birth, nativity, birthday”), from Old French nativité, nativited, from Latin nātīvitas.
- To celebrate one's birthday.