The avocado of the prehistoric age. Green and often bumpy, the dinosaur means "Terrible Lizard". Just like the avocado; a terrible fruit. Dinosaurs are large reptiles, but many believe the CIA simply buried their bones to discourage time travel. It has worked, because obviously I haven't met Elvis yet. Curses.
I am not frightened of that 19 foot to 20 foot T-Rex dinosaur, because of its relatively stubby arms, despite its reptilian flare and tail intensity.
by Rawr Expert April 14, 2011
A.K.A a very old scooter with green wheels that you can hear coming from far away because of its loud squeaking.
A:There comes that chick riding that old dinosaur
B:Where i dont see any one?
A: I can hear them coming!
by nillajenn-jenn July 20, 2009
An elite in halo that has an enomourse back to beat down, a head that sticks out that is easy to snipe, and just plainly the ugliest face in the world. They are mainly used by nubs and bks.

Dino for short
Dude i totally sniped that dino back there in the head what a nub.

Dude we have a dinosaur on our team! We are going to lose!
by FFA Trash August 03, 2007
Something old and slow to the point of obsolescence.
Don't bother buying that game for my brother. His computer is a dinosaur and cannot run it.
by AbnormalBoy April 16, 2005
A dinosaur is an old man, made famous by Ke$ha's song. He frequently hits on younger women, some as young as 12. He can be anyone from a middle school math or science teacher to already retired at "an old folk's home." They slick back their hair, charge into a bar, and offer to buy a girl a martini, olive and everything. They are sure to be a creeper- don't listen to anything they say-even if they have a sexy tank of oxygen! A cougar is the equivalent of this, but the female type. Dinosaurs are more common.
Did you see that dinosaur hit on me?

Totz. It was awksock.

Beetfeet. Let's go....
by YO, Yo-yo!No yo yo, yo! November 06, 2012
a very old person, most commonly a teacher.
not only is mr. garcia a pedophile, he's a dinosaur!
by teresaxlove August 26, 2008
The act of being drunk and high simultaneously
Yeah dude, she's a dinosaur
by A2huronpolo April 09, 2011
A neeky person who is overly-fascinated by the sciences and spends more time with their calculator than on facebook. Rather than being embarrassed by their enthusiasm, a "dinosaur" is proud and they often distinguish themselves to others of their species by performing a "dinosaur dance" with their hands shaped as claws, often in public places.

Notable dinsoaurs would include Ross Geller of Friends and distinguished engineer Catriona McGill.
"ahhhh mate your such a dinosaur"
"Gosh, catriona is such a dinosaur shes whipping out the claws, trying to attract some scientists!!"
by madlibs88 April 27, 2010

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