A geezer is a descriptive word in the UK which is used to define a mans characteristics. A geezer will be found usually out side a pub with a pint in his hand on match day. They commonly like football, scrapping, beer, tea, tits, and Barry white. Geezers often acknowledge other geezers by a greeting each other by saying geezer followed by a nod and a thumbs up.

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.

In the U.K.: A guy, a bloke, a person in general. The British equivalent of the American slang word "dude".

In the U.S.: An old man, particularly one who is either cranky or eccentric. Rather derogatory term.

1. British definition: A geezer is a bloke, a man or a "dude".

2. USA definition: Old bastard. Elderly, cranky old son of a motherfucker who drives too damn slow and complains about how things were in his day

3. Heavy Metal definition: Black Sabbath's bass player, Geezer Butler.

A Geezer is a male englishman who likes drinking, football, and violence, preferably all at the same time. Wants to be the typical cockney jack the lad. They dress up smart to normally pull 'birds' favourites being Stone Island and Burberry. Theyre basically like a better meaner version of a Chav and not bad people to know aslong as you just prove your a 'geezer'. Sorted me ol' mucker...

An English bloke with a shaved head that wears jeans and shirts all day everyday. Has a good old piss up down the local pub, has a kebab or curry, then goes home. Works in manual labour job, builder, scaffolding, plumber and is generally a good bloke, as long as you support his football team.

An old person.