Verb- A type of noise that is exspulsed out of a human when they are trying to make cat noises while laughing extremely hard.
Did you here Noelll Mewo, she sounded like a dying cat!
by Ollie11 March 13, 2010
Top Definition
originally a mispelling of 'meow' on the internet... then came to be random word used when you have nothing else to say...
"See..I have this friend...he died yesterday..."

by Mary February 22, 2004
A cross between a Meow and a Woof.

Commonly used by the Catdog.
Hey I know a Cat says "Meow" and a Dog says "Woof"... What on earth does a cat dog say?

"Mewo" Duh.
by Personwhois December 17, 2010
I believe "it's" my totally original misspleling of meow. I made it up with my friends as a codename for my fav game...CSS!
<me>:ayo u gonna hop on mewo 2 day?
<friend1>:sure ill be on as soon as my mom leaves
<friend2>:i don't have mewo!
<me+friend1>:your a fag!
by Carpe Noctem February 23, 2005
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