What is PRMB ? There may be more than one meaning of PRMB , so check it out all meanings of PRMB one by one. What does PRMB mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: PRMB. with application for enrolment in CWC PRMB base policy can be submitted by the retired employees online. PRMB - Typical Design: 2.