- Bachelor of Surgery.
- British. Companion of the Bath.
- centre of buoyancy (of a boat, etc)
the chemical symbol for
- Citizens’ Band
- Companion of the (Order of the) Bath (an English title)
- County Borough
- (in Canada) Cape Breton Island
1959, abbreviation of citizens’ band (radio).
- A bipolar lead of an electrocardiograph that has electrodes attached to the chest and back.