Dam
Part of speech: verb
Definition: To block the flow of water.
Part of speech: noun
Definition: Structure placed across a flowing body of water to stop the flow. A device to prevent a tooth from getting wet, consisting of a rubber sheet held with a band. Mother, generally regarding breeding of animals (compare sire).
Example sentence: How prone poor Humanity is to dam up the minutest remnants of its freedom, and build an artificial roof to prevent it looking up to the clear blue sky.
Dyke
Part of speech: noun
Definition: (usually derogatory) A lesbian, particularly one with masculine or butch traits or behavior.A toilet.a ditch.a valley.A lesbian. This word has been reclaimed, by some, as politically empowering. (See usage notes.)