The definition of BO is an abbreviation for body odor, which is an unpleasant smell a person can have if he doesn't wear enough deodorant.
(abbreviation)An example of BO is the way a person smells after he has been to the gym for two hours and sweated a lot and not showered.
The definition of B/O is a bookkeeping abbreviation for brought over.
(abbreviation)An example of B/O is the notation used when a new account is set up with a balance from a closed account.
See bo in Webster's New World College Dictionary
or B/o
See bo in American Heritage Dictionary 4
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