m-w 

Short for Merriam-Webster, it is the online version of one of the best selling companies for dictionaries and other language guides.

I couldn't find my normal Merriam-Webster dictionary laying around, so I checked out m-w online!

m-w by Conexion August 8, 2005

M-W 

This is a "crew" from ny that be the shizznit

Yo M-W in tha house bitches

M-W by madvandl December 13, 2004

m/w

m/w can be often spotted in a bio, typically on discord or twitter with a name or @ usually followed after. it stands for "matching with" which indicates the context between a pfp to show who has the other half of the picture.

Person 1: Hey, what's your pfp?
Person 2: Oh, I'm just m/w my friend John. He wanted to match profile pictures so I agreed.

m/w by milo99 June 17, 2022

m/w

An acronym short for “matching with” mostly used on online profiles.

pfp m/w tyler

m/w by Octie July 13, 2022

M/W

someone who loves men and women.

pete: are you into men?
sarah: m/w

M/W by milfmagnet6996 May 3, 2021

M@W 

Global Mod @ suprnovaforums.com

If you are a global mod at SNF called M@W then it is rather obvious that you are highly intelligent, super sexy & have a huge pecker.

M@W by M@W July 20, 2004

m@w 

I can confirm that M@W definitely is super sexy and has a huge pecker

I would liken M@W's pecker to the trunk of a Canadian redwood

m@w by Sassy Sara July 22, 2004