Top Definition
A portmanteau is where two or more words are combined to make a new word (e.g. bootylicious, turducken).

A portmantbro is a portmanteau where one of combined words is "bro" (e.g. brogrammer, broga, humphrey brogart, broadkill, etc).
Me: I tried going to broga for the first time yesterday, turns out it was a bunch of brogrammers. I was totally broadkill.

Grandma: Can you go a single sentence without using a portmantbro?

Me: Chillax Humphrey Brogart.
by Loren David Newman January 04, 2013

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