dyke
noun [ C ] (also dike) uk/daɪk/ us/daɪk/
(WALL)
堤坝，大坝
a wall built to prevent the sea or a river from covering an area, or a channel dug to take water away from an area
Compare: dam noun (WALL)
(WOMAN)
slang（冒犯性用語）女同性恋者
a lesbian . Many people consider this word offensive.