1 [dahyk]
an embankment for controlling or holding back the waters of the sea or a river: They built a temporary dike of sandbags to keep the river from flooding the town.
a ditch.
a bank of earth formed of material being excavated.
a causeway.
British Dialect. a low wall or fence, especially of earth or stone, for dividing or enclosing land.
an obstacle; barrier.
a long, narrow, cross-cutting mass of igneous rock intruded into a fissure in older rock.
a similar mass of rock composed of other kinds of material, as sandstone.
Australian Slang. a urinal.
verb (used with object), diked, diking.
to furnish or drain with a dike.
to enclose, restrain, or protect by a dike: to dike a tract of land.
Also, dyke.

before 900; Middle English dik(e), Old English dīc < Old Norse dīki; akin to ditch

diker, noun
undiked, adjective
Dictionary.com Unabridged


2 [dahyk]
noun Slang: Often Disparaging and Offensive.

dikey, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
dike (daɪk)
n, —vb
a variant spelling of dyke

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

O.E. dic "trench, ditch," from P.Gmc. *dik- (cf. O.N. diki, Du. dijk, Ger. Deich), from PIE base *dheigw- "to pierce, fasten" (cf. Skt. dehi- "wall," O.Pers. dida "wall, stronghold, fortress," Pers. diz). At first "an excavation," later (1487) applied to the resulting earth mound; a sense development
paralleled by cognate forms in many other languages. This is the northern variant of the word, which in the south of England yielded ditch.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
dike   (dīk)  Pronunciation Key 
  1. A body of igneous rock that cuts across the structure of adjoining rock, usually as a result of the intrusion of magma. Dikes are often of a different composition from the rock they cut across. They are usually on the order of centimeters to meters across and up to tens of kilometers long. See illustration at batholith.

  2. An embankment of earth and rock built to prevent floods or to hold irrigation water in for agricultural purposes.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The inability of the world's economy to build dikes around every coastal city,
  every inhabited coast on the planet.
Theirs was the reiterated godlike role of separating the dry land from the wet
  by a defensive line of dikes and pumping windmills.
The construction of walls or dikes within the channel is factored into the
The lines represent locations of magnetic highs that they interpreted as dikes.
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