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While "to wank" means "to masturbate", the term "wanker" is seldom if ever used in British slang to denote "one who wanks". It is quite wrong to infer from somebody's being a wanker that they in fact wank (and vice versa), but of course, fair to assume they do in any case. Herein lies the genius of the insult: if you call someone a wanker, it's probably true, but only literally.

I suppose it all originates from our repressed Victorian sexualities, from back when everybody thought they were the only ones to suffer the secret shame of being an actual wanker.

Most children these days learn the word "wanker" long before they learn its literal meaning.
You're such a wanker.
Oh gosh! How did you know?

He lost both of his hands in a childhood kiting accident.
What a wanker!
by anonymous May 31, 2004
A person who is addicted to playing themselves.
John is a wanker.
by joosy poosy May 04, 2003

1) One who masturbates to excess.
2) One who uses the word 'skillz' and takes it seriously.
"Stop saying skillz, you bloody wanker! Speak properly!"
by victorhadin March 25, 2003
a wanker if someone who has a "wank"

which means to masterbate.... and the hand sign for this is a "knuckle shuffling motion"
what u doin u fucking wanker
by dtest March 02, 2003
wanker:, pee pee yanker, male masturbater.jerkoff
Some one masturbates and who is a jerk!!! An abuse term for a masturbater!(Wanker)
by marquel December 29, 2007
'one who masturbates their pork sword more than an ordinary person', 'a person who comes across as stuck up or smug'
Mum: 'Johnny you really should stop tossing off that tiny tree stump of a penis you have'
Johnny: (while wanking) 'what can I say Mum im just a wanker'
Mum: Indeed you are Johnny look at you go infact I might join you for a wank later then we can be wankers together. Goodbye wanker Johnny!

Example 2:
Yoda: Luke use the force
Luke: fuck off u midget green wanker
by Dan Roach September 18, 2007
Possibly a name attached to certain people tou do not like or simply a term for a person who is a general ass-hole

Also applyable to people of authority who are unliked by those they control
eg - IT teahers
Student 1 - You know our IT teachers a right wanker
Student 2 - Yeah Jarule is a real wanker he thinks he knows
something but he knows jack shit
by Guy in a chair January 10, 2007
Usually used to describe a male, it has several meanings.
Most commonly used to indicate disdain, dislike or just dissin´ an individual and is a replacement for other words such as prick, tosser or knob.
Also describes a person who masturbates frequently or alternatively, is a frequent masturbator.
Bob: Hey, see that guy over there, he's such a wanker.
Rob: Really ?, no wonder he's wearing glasses.
by chrisinspain July 26, 2006