Triin

Triin is an Estonian feminine name, traditionally considered a short form of Katariina, the Estonian equivalent of Katherine, which ultimately derives from the Greek name Aikaterine, whose meaning remains debated but is often associated with the Greek word katharos, meaning pure. The name has been used in Estonia for centuries as an independent given name rather than merely a nickname. Katariina and Karin are related forms within the same name family.