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Caleo is a ship for "Calypso" and "Leo Valdez" in the popular book series "Heros of Olympus" by Rick Riordan. Calypso, stranded on an island for all of eternity, meets Leo Valdez and she instantly dislikes him, but over time, she falls for him, they kiss, Leo leaves, but not before he swares on the River Styx that he'll come back for her. And fangirls everywhere believe that they'll end up together, but with the lines of the prophecy ringing in Leo's ears, "An oath to keep with a final breath," We're not so sure Leo's going to live to keep his promise to Calypso, or he'll die trying.
Calypso Leo Valdez Rick Riordan Greek Percy Jackson Annabeth Chase Caleo
Caleo by Kelly 8 Wowza Nic January 16, 2014
Related Words
California slang term, means "shoes," specifically "dress shoes."

Variation from Spanish word: calzado, meaning shoes or shoe wear.
"I'm going to the dance tonight and I'll be wearing my new calcos along with my new suit."
calcos by Nando A. March 10, 2007
The act of somewhat studying for a calculus final, while killing brews you cant bring home.
Wanna study some calcohol?
..Yeah
Calcohol by RReinold June 2, 2011

calchottie 

The absolutely gorgeous brunette in your calculus class. Her body is spectacular. Her intelligence makes her all the more attractive. You desperately want to talk with her and get to know her, but you are somewhat older and fear that the age difference would just be too weird. You wonder if she would be interested in studying together.
In my calculus (M408D) section at the University of Texas Austin, the calchottie sits in the front row on the right hand side.
calchottie by Eric Abell March 6, 2008

calcoolus 

A very cool class in which you get to learn calculus. It is the best math class ever! So much fun to learn derivatives and integrals. Most schools only offer calculus. Only certain teachers have the Intellic and fun loving nature needed in order to teach calcoolus.
I am so glad I go to a school that offers calcoolus.
Best math class ever is calcoolus, ofcourse I have only had bad math classes.
calcoolus by CaylaCool September 13, 2016

calcomania 

recurrent urge to steal calculators that you generally do not really need
Sally has a real case of calcomania. She even took a calculator from Algebra class today.
calcomania by 7oaks September 22, 2016