The word is from the beatles song "I am the walrus". It doesn't have any meaning, it was written as jibberish to try to confuse the speculative fans who always found "hidden meanings" in the beatles songs and album covers......because people are STUPID.

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.

This has occupied Beatles fans and pop culture junkies for a long time. In fact the correct term is Crabber Logger and it was a large civil engineering machine which went out of control in an episode of Thunderbirds called Paths Of Destruction. it was first broadcast on 9th October 1966 (Lennon's 26th birthday) and repeated several times thereafter.

The adjective used in the Beatles song I Am The Walrus, describing a fishwife that is very short, fat, and covered with warts.

a dude who lurks on forums, leaping out with witty retorts and posts so well timed that any unsuspecting member is instantly owned.