A flood wall often made of rock and earth. It is chiefly British, spelled Dike. It may also be a ditch or channel. In Geology, it is a long mass of igneous rock that cuts across the structure of adjacent rock. The use of a dyke may cause severe flooding on the other side of the river and up-stream of the dyke.

This is also the original meaning of the word, in comparison to the new, generally accepted meaning referring to lesbians.
Because of the dyke across town, the flood was significantly less devistating.

Though it's a risk, there is a small hole in the dyke to let water seep out through more quickly.
by Ben Deivert May 31, 2008
Refering to a Lesbian who for one reason or another hates men. Most of the time thinking that they (women) should rule the world. Not to be confused with a regular lesbian who simply enjoys relationships with other females. A Dyke thinks that all woman should be lesbians and men completely taken out of the equation.the ironic thing is that dykes more often than lesbians seem to dress like men even though they claim to hate them.
I hate those man hating Dykes
by Lumpkins July 12, 2008
Girl hockey player
usually has bad skin and bad hair

gary: Oh man, look at that dude with nasty curly hair and intense muscles
george: Um, thats a girl
gary: Ohh my mistake, she plays hockey
george: hugeeeee dyke
gary: HECK YES
by lynardskinna May 07, 2008
1) A lesbian who is more manly than lady-ish and usually is the alpha-lesbian.

2) My sister.

3) David Spade.

4) You.
Wow dude... My sister... is a total dyke!

Ho! that lesbian better find a hot lesbian, not that dykey dyke Mcdykington!

by Lesbian seagul September 23, 2007
A Lezbo Mexican emo girl.
Hey, did you know Jasmine is a dyke?!
by Lezbo J May 03, 2008
a woman who loves to fornicate with other women or in other words fuck them these women are usually easy to tell that their a dyke by their short hair manly looks maybe a bitch or a bitchy atitude, but some of these women are extremely hot. this would be called a lesbian(or hopefully a bi-sexual)they make very good porn.
"damn that girl's hot, she can't be a dyke...maybe a lesbian...but not a dyke."

guy 1: "holy shit, was that a guy"
guy 2: "naw dude that was a girl"
guy 1: "oh...must have been a dyke"

"that teacher Ms. Pruitt is a dyke"
by ho ho ho now i have a machine gun February 13, 2008
Dyke also known as "Robo Lesbians" is a term often used in the Midlands area of England, a play on the original meaning of Dyke meaning "Lesbian" in that Dykes are often girls that act as heterosexuals but seem to pride themselves on wearing all of the same style or brand of clothes and using all of the same dyke-like lingo. Dyke groups normally form when a group of girls have recently all broken up with their boyfriends, who they all collectively hate for totally inane and irrellevant reasons.

Dykes often appear to be flatchested (rarely having a cup size larger then C), they stick together in groups, often to comment on what people are wearing (or what they should be wearing). They often dress in the same clothes and believe men are the inferior gender, unless they are really handsome/buff (or easy). They listen to the worst of chart Music (Lady Gaga, La Roux, Florence and the Machine) and they are one of few reasons why the hideous industry of Music is making any money at all.

Slaves to pop-culture, they have to indivudality whatsoever, and will change their personalities to fit the stereotypes of pop-culture at the time.

To emphasise completely normal points they use words like "actually" and "can you (actually) not?".
"Dyke 1: I'm really thirsty"
"Dyke 2: Yeah, me too, so thirsty"
"Dyke 3: I'd really love a drink too"
"Dyke 4: Wanna go get a drink?"
"Dyke 5: Lets actually get a drink"
"Dyke 6: Yeah, I'm parched, lets 'roll'"
by davidjackjohanson August 15, 2009
a REAL butch lesbian; one with a crew cut hairstyle who wears taper legged Lees, Wolverine workboots and flannel who shouts out things like "hey brenda! gimme a lift my truck's broke again!" in a husky HUSKYASS voice.
k.d. lang. remember, all dykes are lesbians, but not all lesbians are dykes.
by choozyoozy April 05, 2003

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