Definition & Meaning of "Abigail"in English

What is the origin of the term "Abigail" and how is it used?

"Abigail" is a British slang term from the 20th century used to describe a middle-aged man who is secretly homosexual and hides his sexual identity. It comes from the practice in some gay subcultures of assigning female names to men who were discreet about their sexuality, with "Abigail" becoming shorthand for a closeted, often socially conventional man. The term was typically used by other gay men in informal or humorous contexts, sometimes teasing but often pointing out secrecy or hypocrisy. It is derogatory in tone and context-dependent, rarely used outside historical discussions of British gay slang.