Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
bm is a noun meaning "solid excretory product evacuated from the bowels". It carries 2 recorded senses.
solid excretory product evacuated from the bowels
a euphemism for defecation
“he had a bowel movement”
euphemism
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for bm come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.