from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Slang The supposed ability to discern whether a person is homosexual.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The supposed ability to detect whether or not a person is gay by observing that person.
Blend of gay and radar.(American Heritage® Dictionary of the English Language, Fourth Edition)
Blend of gay and radar (Wiktionary)