Term used, primarily by US immigration officials in informal settings, to describe an illegal immigrant of any country. Origins are unknown, but definitely predate the use of metal flashlights, contrary to the most used description of origin. It's probable that the origin is related to Chinese immigration, as the first law to restrict immigration from a particular country was enacted in 1882. It's said that many of the illegal immigrants made their way to the US via the Gulf of Tonkin area of what is now Vietnam. It's also possible that the term is related to the Chinese "tong" mob. The word should be considered only as derogatory as the phrase "illegal alien" as it does not refer to race or even nationality, only to one's immigration status in the United States.
The US Border Patrol Agent caught 3 Honduran tonks, 18 Mexican tonks and a Korean tonk when they tried to sneak across the border this morning.
by Dave February 26, 2005

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Noun

1 Violent masturbation session, particularly when depressed or hungry.

2 Vigorous post-workout masturbation in any gym's changing room or showers.

Verb

To bring ones' self or another male to orgasm following, or sometimes during, a workout in the gym
- "I've really worked up a sweat on the treadmill, I'm gonna go tonk in the

showers while my hands are still naturally lubed up".

- "Alright mate, fancy a quick tonk to relax after pumping these weights?" (N.b:

the verb "to pump" is often used as a double entendre as it can refer to both

weight-lifting and intense masturbation, hence rendering superfluous the use

of the actual word "tonk").

- "God, I hate having to clean these showers. So many guys tonk themselves

silly after they've finished working out, some of them leave a right mess!".
by Slapmeharder June 24, 2014

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A game based on gin rummy for three to six players. Hands are won with three to four of a kind and runs. Also by doubling up and going low. It was made up by the african american community but it has recently spread into certain pockets of white suburbs.
I lost 7 bucks playing tonks the other day.

Tonks is such a nigger game.

Euchre and tonks.
by Quintuple Eagle Eye July 23, 2011

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'Street' slang for muscular and built, usually used to describe people with large arms.
'Yo isn't Jaspreet Sidhu enormously hench?
'I think 'Tonk' is a much better word for it.
by Ymm. May 08, 2011

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Nickname for someone, usually a woman, that changes their hair or other parts of themselves regularly.
char's a bit of a tonks tbh
by charmundy August 09, 2008

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A word used to replace 'klutz' (or 'clutz'). It has the same definition of being a clumsy person and is derived from the character of Nymphadora Tonks in the Harry Potter books who was "dead clumsy".
Sister: *walks into supermarket and knocks over a shelf of canned soups* "Crap! I'm sorry.
Brother: *sighs* "You're such a tonks."
by Rina Lam October 12, 2011

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This is a word that has many meaning's. It is a word that can not be told how to use, you simply must learn how to use it.
1. That guy is Tonked as!

2. She's so hot i just want to Tonk the shit out of her!

I'm gonna Tonk her like she's never been Tonked before!

3. Let's go get Tonked

4. Dude I'm so Tonked! (Drunk/Happy/Sad/Excited/Depressed.. etc)

5. I'm gonna Tonk you!!!

6. hahahaha you're such a Tonk
by Milfna July 08, 2010

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When one singularly fails to achieve what they set out to do when commencing a conversation, much to the disappointment of their peers. A failure to either glean or pass on any information during the course of a conversation.
You just tonked that conversation. You just exchanged niceties for ten minutes. Phone them back and actually find out what time we're meeting.
by jgalffromcrig October 17, 2010

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