Top Definition
An extension of the term 'to dip' as in 'to leave', named for the sauropods of the genus Diplodoci of the Late Jurassic Period. Colloquially, diplodocus refers to a situation where the term 'dip' doesn't fully represent the necessary dipping required to bounce properly.
"This party is totally lame. Let's diplodocus"
by thetrevs July 29, 2009
A person who's not very smart; definitively, one who is overweight, slow-moving and slow-witted. Referencing a Jurassic-period dinosaur with an enormous body, exceptionally long neck, and tiny head.
Frank: My boss is such a diplodocus! His pea brain can't comprehend this project I initiated!

Joe: Better hold it down ~ I think I hear him lumbering down the hall.
by Vagabond King February 25, 2010
A dumb person, animal, or inanimate object.
He is a huge diplodocus.
by Cody Bishop January 22, 2006
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