the word backgammon can be an alternative for the word sex. you would use it like if you were in school and you didnt want your teachers to know what you were talking about. or if you were at a family party talking to your cousins about who you fucked, you would say you played backgammon.

The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.

The strategic code name for sexually orientated activities

Backgammon, bak-gam'mon- means back-game-on...like you just took a dump or snapped your carrot in the middle of a dice game...and you are back in your seat and ready to roll dice...so you say back...game...on... the gay community took this to different levels by switching the words around... onbackgayman and backongaymen...they also changed the rules...double sixes gets you a reach around while you get your tail stuffed...and snake eyes gets you a nut rub!

When one has a runny shit emerging and it comes out with such strong force that it shoots up your back and to the top of your head with rapid succession. Most common in babies or laying on your back when shitting.

A term used on chat programs as a tag in the room description to mean it is a cra cra room as in nonstop party of sex and drugs.

East coast term for tight or off da hook. Describes an item not an action.