dyke1
(also dike)
¦ noun
1. an embankment built to prevent flooding from the sea.
an earthwork serving as a boundary or defence: Offa's Dyke.
2. a ditch or watercourse.
3.
Geology an intrusion of igneous rock cutting across existing strata. Compare with
sill.
¦ verb [often as adjective dyked] provide (land) with a dyke to prevent flooding.
Origin
ME: from ON
dik, related to
ditch.
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dyke2
(also dike)
¦ noun informal a lesbian.
Derivatives
dykey adjective (dykier, dykiest).
Origin
1940s (earlier as bulldyke): of unknown origin.