The abbreviation "CB" can have multiple meanings depending on the context in which it is used. Here are some possible interpretations:
1. Citizens' Band - a type of radio frequency commonly used for short-distance communication, often referred to as CB Radio.
2. Certified Benefit - a term used by insurance companies to refer to benefits that have been approved and guaranteed by the company.
3. Chief Boatswain - an officer rank in the Royal Navy responsible for the safety of the ship's crew during mooring or sailing operations, also known as CB.