Birthday

//ˈbɜːθ.di// noun, verb, slang

Definitions

Noun
  1. 1
    The anniversary of the day on which someone is born.

    "When's your birthday? Mine's on April 1."

  2. 2
    an anniversary of the day on which a person was born (or the celebration of it) wordnet
  3. 3
    The anniversary of the day on which something is created.
  4. 4
    the date on which a person was born wordnet
  5. 5
    The date on which someone is born or something is created, more commonly called birthdate or date of birth.
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  1. 6
    A birthday party.

    "I'd like to invite you all to my birthday."

Verb
  1. 1
    To celebrate one's birthday. informal, intransitive

Etymology

Etymology 1

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.

Etymology 2

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.

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