1. slang for someone who masturbates, usually a man.

2. insult.

George W. Bush, USA's current president.

A English cursing word usually used when someone falls or does something stupid,

A person (mostly men) who enjoys and partakes in many masturbation sessions, or "wanking".
Also used in the same sense as "asshole" or "bellend" and can mean a loser

Someone who tries to jerk you off under the table unbeknownst to you. (Thus to criticize the analysis given by the definition of anonymous on May 31 2004, the original sense might not have referred to self pleasuring, or a useless self-pleasuring fool at all, but rather makes reference to giving a less than pleasurable wank on someone else's knob. This is lost on most average wankers on the street today, who hear the overused term at too young an age, and then never can get past the giggle factor of picturing someone diddling on their own willy once they learn that simplistic meaning, never thereafter able to fathom the sordid depth of someone edging someone else who is captive against their will. ) A cheat of sorts. An unscrupulous or uncaring person. Slimy power player. "Prick" as opposed to a "Dick."

The middle of the three size classifications of the human penis, the sizes, in order, going like this:
-Wonker
-Wanker
-Winker

A person that jackesoff a lot or masturbates a lot: often used in the irish language and parts around it including australia