sei

a girl that you can never compare to being a whale in genshin impact because shes practically the whole sea of tevyat whenever a new character releases she'll practically buy the entire shop of genesis crystals and then pull for the character and their signature weapon, sei is also very nice and cool and also very good at games

person one : sei is so cool!!
person two: shes the whole sea of teyvat!!!

by shenheslover December 08, 2021

sei

a female girl.

also has lots of pink.

that sei is mad retarded

by Canin July 21, 2003

sei sei

a magical creature in a school in romania

sei sei is the best creature

by oof_fan December 08, 2022

the Seis

n. an affectionate nickname for Ratty Room 6 in Brown University's Sharpe Refectory, where the brothers of Alpha Epsilon Pi eat dinner together every Wednesday at 6 pm

Jon: "Alright, I gotta run to the lab now, need to finish a Western blot."
Dave: "Are you coming by later for a little uh...a little...Ratty action at the Seis?"
Jon: "Definitely, I'll see you there."

by Railsplitter April 28, 2007

Seis

A person who breaks the Sixth Commandment which signifies the person slept with a married person.

"Oh shit! He just pulled a Seis"

High five for scoring with a married chick man!

by Seis716 July 20, 2010

Seyed

Direct descendent of the prophet Muhammad in the middle east, title of respect given to those of this blood line.

He's very religious and respectful.
He's a Seyed, he must be a great muslim.

by PersianDictionary January 12, 2013

sey

Used as a substitute for yes. Originated from "yes" spelt backwards: "sey" and also has a similar pronounciation to that of the Spanish word for yes: "si".

"So, you wanna come get high?"
"Sey."
"Nice."

by Adam "Ad" Frost April 27, 2004