Meaning and Name Origin
Caoilainn \ca(oi)-lainn, caoil(ai)-nn\ as a girls' name is pronounced KAY-lin, KEY-lin. It is of Irish origin, and the meaning of Caoilainn is "slender and white, fair or pure". From "caol fionn". It is anglicized as Kalin or Keelin.
Caoilainn has 22 more related forms via Kalin: Kaelene, Kaelin, Kaelyn▲, Kaelynn, Kailan, Kaileen, Kailene, Kailin, Kailyn▲, Kailynne, Kalan, Kalen, Kalyn▼, Kalynn, Kaylan, Kaylanne, Kayleen, Kaylen▼, Kaylinn, Kaylyn▼, Kaylynn▲ and Kaylynne.
Caoilainn has 1 masculine form: Caolan.
Caoilainn is an unusual given name for females. Caoilainn is an equivalently unusual last name too for all people. (2000 U.S. Census)
Shown below is an analysis of the popularity of Caoilainn and affiliated names. Calla, Cayla, Kaelyn (#574 a year ago), Kaelynn (#999), Kailyn (#511), Kalyn, Kayla (#102), Kaylan, Kayleen, Kaylen, Kaylyn and Kaylynn (#642) are the popular varying forms of Caoilainn (#unlisted). Adoption of these girl names was at its most widespread in 2009 and is somewhat lower today, with the versions Cayla, Kalyn, Kaylen and Kaylyn becoming less in vogue. Kaelyn (#574), Kailyn (#511), Kayla (#102) and Kaylynn (#642) are four of the more chic baby names in this compilation. (Top 1000 Baby Names Records, 2014)