BM

BM: Abbreviation for "black male" used by doctors as shorthand when jotting down the results of their physical examination.

For example, WDWNBM = well developed, well nourished black male; WDWNBM = well developed, well nourished white male; WDWNWF = well developed, well nourished white female; WDWNBF = well developed, well nourished black female; etc.

The abbreviation "BM" in both lay and medical parlance also stands for "bowel movement."