Definitions for "ABCs"
Associates for Breast Cancer Studies - a philanthropic group.
The Associates for Breast and Prostate Cancer Studies (ABCs) is a group of philanthropists that was formed in 1990 and is comprised of more than 200 members from the Los Angeles-Westside area. The ABCs have raised more than $2 million for cancer research at John Wayne Cancer Institute.
airway, breathing, circulation. When giving first aid, these should always be checked immediately, in the order listed. That is, "Establish an airway, check for breathing and pulse."
ABCs stand for Airway, Breathing and Circulation (and 'D' for Disability or neurological function).
the elementary stages of any subject (usually plural); "he mastered only the rudiments of geometry"
Keywords:  battle, army, command, system
Army Battle Command System.