Crna or CRNA or cRNA can have several meanings. In the languages of the former Yugoslavia, it means "black" when describing a feminine object. The Cyrillic form's црна. As a name, it could mean: Crna's a river in the Republic of Macedonia. CRNA's the acronym for Certified Registered Nurse Anesthetist. Črna na Koroškem's a municipality in Slovenia. cRNA's RNA derived from cDNA through standard RNA synthesis. Crna Ruka was a secret pan-Serbian nationalist ass… (More on Crna)