A cewar ƙamus, Kirsimeti biki ne na Kirista da ake yi kowace shekara a ranar 25 ga Disamba don tunawa da haihuwar Yesu Kiristi. Har ila yau, ana yin shi a matsayin biki na al'adu a yawancin ƙasashe na duniya, har ma da wadanda ba Kirista ba. Kalmar “Kirsimeti” ta fito daga Tsohuwar kalmar Turanci “Christes mæsse,” wanda ke nufin “Taron Kristi.”
