Definitions

1. noun

a diminutive form of the female name Elizabeth, often used as a given name, or a colloquial term for a police officer, especially in the UK

“She’s going by the name Betty for her birthday party.”

2. proper noun

a given name, specifically the name of a female person

“The famous actress Betty White won an Emmy award.”

3. noun

a colloquial term for a female police officer, especially in the UK

“The officer was known as Betty to the local residents.”