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Rocda é uma nomenclatura utilizada para denominar o caracter "∂", utilizado na matemática, principalmente em derivadas parciais.
A nomenclatura é proveniente do Japão no século XVI, e acredita-se que deriva da junção do número 6 ("Roku" em japonês) com as letras "d" e "a".
Professor, aquele símbolo no quadro é o Rocda?
Rocda by matematicojapa@feupp January 14, 2024
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Rockadilly 

The official nickname of International Songwriter, Alan "Rockadilly" Dill.
"What's the deal with Rockadilly? He thinks he can sing his songs with Willie!"
Rockadilly by Everyonehasadream September 7, 2011
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Cute, charming, beautiful girl. Always has a smile on her face. If you're down she can always bring a smile to your face. Loyal incredible friend. Easy going and loves people! You will always have a laugh with this girl. Being friends with a Rochana is fun and unique. Any girl would be lucky to be her friend and any guy would be lucky to be with her.
"Rochana is bloody awesome!" " I'm going to go see Rochana I'm not feeling too well" "You're with a Rochana? DAMN"
Rochana by laughoutloud20202 February 6, 2010

roadalingus 

The act of giving or receiving cunnilingus while the subject receiving stimulation is driving. This is the female counterpart to road head.
Person A: That chick gave me wicked road head on the way to see Harry Potter 5: The Order of the Phoenix.
Person B: Oh nice! Did you return the favor by giving her some roadalingus?
Person A: Yeah, on the way to church.
Person B: Noice!

kitty roca 

A treat for household dogs often found in the household cat's litterbox.
I was finishing up my laundry last night and I spotted Rex eating the last of the kitty roca.
kitty roca by Davey Rocket November 11, 2003
A hilarious, interesting and dynamic personality.
He is such a rochak person, you should go out with him.
Rochak by Creator_art October 2, 2018

rochacha 

A nickname for Rochester, NY used mostly amongst Rochester natives. Indicates their fondness yet slight disdain for the city.
Hey, we should go back to Rochacha this weekend and catch the laser show at High Falls!
rochacha by crazygal55 January 15, 2005