Person 1: Bruh today how bout I fell up the stairs at school today. Looking for the definition of GMW? Find out what is the full meaning of GMW on Abbreviations. What is GMW ? There may be more than one meaning of GMW , so check it out all meanings of GMW one by one. What does GMW stand for? What does GMW mean? We have 59 definitions. What does GMW mean? Get the full information of GMW acronym / abbreviation / slang definitions at AcronymsandSlang.