'Dyke' definitions:

Definition of 'dyke'

From: WordNet
noun
(slang) offensive term for a lesbian who is noticeably masculine [syn: butch, dike, dyke]
noun
A barrier constructed to contain the flow of water or to keep out the sea [syn: dam, dike, dyke]
verb
Enclose with a dike; "dike the land to protect it from water" [syn: dike, dyke]

Definition of 'Dyke'

From: GCIDE
  • Dyke \Dyke\, n. See Dike. The spelling dyke is restricted by some to the geological meaning. [1913 Webster]

Synonyms of 'dyke'

From: Moby Thesaurus