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

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A word that has been reclaimed by some lesbians and queer woman as a term of empowerment.

It could be from the name Boudica (or Boadicea or Boudicca) who was a queen of the celts and was the leader of the only army to ever defeat the Romans in battle. Eventually the Romans did defeat her andher army. She was captured and died by suicide of swallowing poison.
I am dyke and proud of it.
by Anonymous October 23, 2003

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A strong, assertive woman -- regardless of sexual orientation.
"Get ready for an uppercut, you dyke!" - Finn the Human to Marceline the Vampire Queen, on Adventure Time with Finn and Jake.
by RamonCarlos September 08, 2010

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A girl who has sexual feelings for girls
Allie is a hard core dyke

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AKA: janessa--a girl with a passion for lacrosse and strange alternative music and the most basic white girl rap--loves to wear tight pulled back ponytails and talk about lacrosse. most likely a D1 commit. wants to attend naval academy so she can be in a literal army of dykes.
"Janessa is so good at lacrosse, yeah because she's a dyke."
by cashmeoussidehowboudah January 24, 2017

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A dike or dyke in the street is a hoe that was born addicted to the crack rock. However, as the dike grows older she forms a relationship with a crack rock dealer that also serves as her pimp, this is called a sill, not a dike. This is a type of tabular crack or sheet cocaine intrusion cuts into the profit of the pimp like the decaying layers that cut across the siding of the whore houses.
Guy: Yo look at that dyke. She would do anything for some crack.
by The Naked Booty October 13, 2014

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A word that describes an ugly or Masculin lesbian.
Dyke is usually a very angry female self proclaimed that gets in other peoples faces because she feels socially rejected by society and in turn acts out or cuts her hair short.
by Shadoein February 07, 2014

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1. A lesbian with short hair. They feel better about themselves calling themselves dykes but really only created a word that when thought of represents a ugly lesbian with short hair. They also bitch alot about their self right to be called dykes.

2.Someone who unnecessary bitches.
Yo do you see that guy over there?

Dude thats a dyke...

We always go late to fucking lunch. Then i got to eat fast then sprint to class. fuck man like what the fuck.

Dude stop dyking. Your such a dyke.
by Dro aka spear boy January 13, 2011

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