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1.
Noun. A pun on "Adam's apple," it refers to the large bulge on the trachea when it occurs on a woman. (Note: this may be the sign of a male-to-female transvestite or transsexual, or may simply be the luck of genetics).
"Holy crap! Look at that madam's apple on Ann Coulter!"
by Tha Funkinator March 08, 2005
 
2.
the woman's version of an Adam's apple.
Becky: why don't girls have an Adams apple?

Susan: we do, its called an madams apple!
by kittycat333 November 21, 2010
 
3.
The large thyroid nodule visible on the neck of middle aged woman
She had biopsy of her "madam's apple"
by proton99 May 20, 2009
 
4.
When a man dresses like a woman very well, but there is just something not right... The adam's apple is clearly visible.
Guy 1: "That chick is soo hot, I'm gonna buy her a drink!"

Guy 2: "Dude... that chick has a Madam's Apple.. yeah... that's a guy...."

Guy 1: " Oh! Good save!!!"

Guy 1 and Guy 2: High Five!
by Ms. Cutthroatt January 09, 2010
 
5.
Transgender throat condition indication that the woman was really a man
She had a high voice but you could see his huge "Madam's Apple" on her throat
by wicked crank October 10, 2013
 
6.
A pronounced laryngeal prominence on an otherwise convincing transvestite or cross-dresser.
Missy B truly looked like a woman in her new show outfit, but her Madam's Apple was a dead give away
by o-line August 10, 2009
 
7.
An immature, trans-phobic term used to offend mtf transsexuals, transvestites, and unlucky cisgendered women.
Idiot: Wow, look at that thing's madam's apple!

MtF: ...What?

by Deborah! August 18, 2007