Posted in Dictionary, Health & Medicine, Information Technology, Internet Slang, Organizations, Pop Culture, Schools & Education, Science B&M stands for Bacon and Mushroom (food) B&M stands for Baker & McKenzie (law firm) B&M stands for Bargain Madness (UK retail store chain) B&M stands for Baume et Mercier (watch manufacturers; Switzerland) B&M stands for Billington & Mayman (UK) B&M stands for Bishop and Martyr B&M stands for Bitchin’ and Moanin’ B&M stands for Black & Mild (cigars) B&M stands for Bolliger & Mabillard (rollercoaster design firm) B&M stands for Boston & Maine Railroad B&M stands for Brick & Mortar B&M stands for Burnham & Morrill Co. (baked beans) B&M stands for Burns & McDonnell (engineering firm) B&M