Top Definition
1.) noun: A pastel pink triceratops, host of the educational children's program "Morris Thinkasaurus". From the novel Big Fred, by Robert Schark.

1.) Come join our song,
it won't take long,
it's time to learn and play!
He's happy and pink,
and gives you a wink,
he's Morris Think-a-saur-us!

We'll sing and run,
and have lots of fun,
while learning to share today;
join Zerky and Russ,
and all of us,
and Morris Think-a-saur-us!
1.) In Big Fred, Tyler's eight-year-old sister loves to watch Morris Thinkasaurus during breakfast.
by thespecter September 01, 2007
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