Word Study
bm
CIDE DICTIONARY
bm, n.
an abbreviation for bowel movement; -- used as an informal euphemism, especially in hospitals. [PJC]
THESAURUS
bm
bloody flux, bowel movement, buffalo chips, ca-ca, catharsis, coprolite, coprolith, cow chips, cow flops, cow pats, crap, defecation, dejection, diarrhea, dingleberry, droppings, dung, dysentery, evacuation, feces, feculence, flux, guano, jakes, lientery, loose bowels, manure, movement, night soil, ordure, purgation, purge, runs, sewage, sewerage, shit, shits, stool, trots, turd, turistas, voidanceFor further exploring for "bm" in Webster Dictionary Online