Sieve

In general, a sieve separates wanted/desired elements from unwanted material using a tool such as a mesh, net or other filtration or distillation methods, but it is also used for classification of powders by particle size, or for size measurement as an analytical technique. The word "sift" derives from this term. A strainer is a type of sieve typically associated with separating liquids from solids.

Chemistry
Sieving coefficient, in transport phenomena

Mathematics
Sieve theory, a technique for counting or filtering sets of numbers
Sieve of Eratosthenes
General number field sieve
Large sieve
Sieve (category theory), a way of writing down how objects in a category glue to give other one

Computer science
Sieve (mail filtering language), a proposed standard for specifying mail filters
Sieve C++ Parallel Programming System, an auto-parallelizing compiler for C++

by CEEEEEBS October 30, 2008

siesta

A party in a bed, with your eyes shut. A sleepy fiesta.

Oh man im all tuckered out after that huge fiesta, i need a siesta

by Georgeeeeeeeeeeeeeeeeeeeeeee January 5, 2009

sierra mist

when a man ejaculates into the anus (male or female), and the reciever passes gas, causing the semen to come back out of the rectum.

'man the sierra mists last night was totally uncalled for!

'wow, that sierra mist was awesome!'

by corky March 29, 2004

sierra mist

its like the girl sierra refreshing, good,and sexy like the curves on the bottle and like bein in bed wif her

damn, that girl sierra so sexy she look like a 20 oz sierra mist bottle.

by nina March 27, 2005

stephanie siemiller

co-host of G4techTV's, Fresh Gear, show and is undoubtedly one of the hottest hosts in the entire G4techTV network.

Not only she has image, but she also has a mind that has knowledge in the technicalities of information technology.

"Dude, forget Cameron D. Stephanie Siemiller is all that I need!"

"Stephanie Sei...who?"

"Dude, you don't know? What noob you are living under a rock!"

by anjiro November 6, 2004

Rainbow Six Siege

A video game where if this is the only game you play then your just a bunch of gay males who talk about which guys is the hottest in the classroom then meet the next day on the swings to make out

Luke: Hey did you hear mike is addicted to rainbow six siege
Arthur: Yeah he must be really fucken gay

by FrostedFlakes69 April 17, 2020

Siege

Laying siege is the ancient art of the gang bang, but much more brutal and satisfying. Sports Illustrated has described it is "the ultimate team bonding experience for a team or a group of bros". The act of laying siege involves 5 guys participating in sexual intercourse with a woman at the same time, with one dick in the mouth, one in the anus, one in the vagina, and 2 of them receiving hand jobs, constantly switching roles every 15 minutes or so. The term "laying siege" is derived from the military strategy, in which an opposing army blocks off a town or city from all ability to travel, trade, or receive supplies, just as how the lucky lady is unable to move (or sometimes breathe) during the intercourse. After several days, laying siege is officially concluded with a group facial. First recorded activity of laying siege have been dated back to the Ice Age in which they were forced to reproduce and share body heat at the same time. Foreplay is an ancient ritual and is often encouraged.

Brian: Dude, I can't wait to lay siege on this bitch!

Steven: Yeah, man! I bought us all top hats, bow ties and canes so we can do a musical number naked as foreplay before we completely wreck her!

Brian: Yes!! I call asshole!!

by tuna2692 November 4, 2011