Birthday

Noun

 * 1) The anniversary of the day on which someone is born or something is created.
 * 2) The date on which someone is born or something is created.

Adjectives for Birthday
happy; sad; romantic; memorable; unsung.

Verbs for Birthday
commemorate—; document—; endow on—; fete on—; honor on—; memorialize—; observe—; register—; trace—; —approaches.

Thesaurus
anniversary, annual holiday, bicentenary, bicentennial, biennial, bissextile day, centenary, centennial, commemoration, decennial, diamond jubilee, golden wedding anniversary, holy days, immovable feast, jubilee, leap year, name day, natal day, octennial, quadrennial, quasquicentennial, quincentenary, quincentennial, quinquennial, septennial, sesquicentennial, sextennial, silver wedding anniversary, tercentenary, tercentennial, tricennial, triennial, wedding anniversary

Derived terms

 * birthday boy
 * birthday cake
 * birthday card
 * birthday girl
 * birthday honour
 * birthday party
 * birthday present
 * birthday suit
 * happy birthday