Slang The supposed ability to discern whether a person is homosexual.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "gaydar" in a sentence
"Then I'm afraid I taught her the term gaydar because she asked, how, if straight people and gay people weren't very different, one could tell them apart, which cracked her up."
"It might be that the TROLLS gaydar is on the fritz today, because I figured all the haters, hypocrites and bible thumpers would be here … … …. or are they all out there protesting homosexuality at our brave soldiers funerals."
"Some have expressed shock; others are quick to boast that they already knew, due to their "gaydar" - enhanced psychic powers."