Echidna 

An Austrailian monotreme that looks like a hedgehog, but with an enlongated snout. Lays eggs.

The echidna is a mammal and is not to be confused with the enchilada, a Mexican food item.

Echidna by AngryAmishMafia May 26, 2004

Echidna 

A half-snake, half-human woman from Greek mythology. Hates Australians for naming a cute mammal after her.

Echidna was unforgiving as she fiercely ate all the hedgehog-looking creatures she could find.

Echidna by itsawhatsit April 15, 2011

Echidna 

when a man moons over far enough his tockley sticks out like an Echidna's snout

Hey show us yer Echidna ya mad roota!

Echidna by The Werewolf November 24, 2004

echidna penis 

A 4-headed penis.

My girlfriend invited 3 other girls when she found out I had an echidna penis.

echidna penis by JesJesJulio July 11, 2014

Echidna Rash 

An irritated discolouration of the skin around the finger joints usually brought about by prolonged exposure to japanese anthropomorphic personifications of obscure antipodean mammals.

1: Dude what the hell is that on your knuckles?
2: Oh man it's just something I picked up the other day. Doctor says it's called Echidna Rash.
1: Gross!
2: Nah. It's not as bad as the other week when I had the Botniks.
1: Don't wanna know...

Echidna Rash by Branch Wanked February 23, 2011

Knuckles the Echidna 

One of the main characters of Sonic the Hedgehog franchise. He's really cool, stoic, badass, friendly, ass-kicking and a true hero. Knuckles shares many similarities to Piccolo from DBZ. Both are loners who don't talk much but are honest, they are both heroes who were villains when they first appeared, but turned good. They both have a friendly rivalry with the protagonist (Sonic and Goku, who are also very similar) and also became good friends with a cheerful kid (Tails and Gohan). Both protect their homeland which means everything to them.

Another character similar to Knuckles is Gaara from Naruto. They were both villains by for a very short time but became heroes afterwards. Both are very good friends and former rivals of the protagonist (Sonic and Naruto). They are also both red headed.

Knuckles the Echidna is ultra badass

Knuckles the Echidna by Reggae Rasta November 15, 2014

Knuckles The Echidna 

Knuckles is a cool guy with a bad attitude. He does'nt like to be pushed around. Him and Sonic fight a lot, but I think their good buddies.

Knuckles is cool.

Knuckles The Echidna by Hamtaro October 15, 2003