DIKE, n. [G. See Dig. It is radically the same word as ditch, and this is its primary sense; but by an easy transition, it came to signify also the bank formed by digging and throwing up earth. Intrenchment is sometimes used both for a ditch and a rampart.] 1. A ditch; an excavation made in the earth by digging, of greater length than breadth, intended as a reservoir of water, a drain, or for other purpose.2. A mound of earth, of stones, or of other materials, intended to prevent low lands, from being inundated by the sea or a river. The low countries of Holland are thus defended by dikes.3. A vein of basalt, greenstone or other stony substance.DIKE, v.t. To surround with a dike; to secure by a bank. DIKE, v.i. To dig. [Not in use.]
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