1. Noun. Plural. A combination of the two words "Bras" and "Undies". Encompasses both previously mentioned clothing articles, or can be used to describe any (conventional) female undergarments. Merged for greater convenience. Cannot be used as a singular.
1. "I need to go shopping for some more brundies."
or
"She wears matching brundies."
by Dr Nerd May 20, 2006
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Brundies is simply a short term for stained or brown underwear. The stain originates from the uncleaned anus of the user.
You dude do these qualify as "brundies"? or Check out the work i did on these "brundies".
by dalecannon1983 October 2, 2018
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The circumstance or situation when you realise your penis seems to be far below average size and has adapted to its environment of pitch black and being covered in pubes whilst bile is being seeped from pores in your penile skin.
Billy-"Mum, I can't see my penis and it's hurting rather extensively"

Mum-"Ohhh Billy, you've got yourself a bad case of 'brundie' or in other words (flagitious uterjuban) ..
by Hypotenuse precipitation February 15, 2016
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