a long thick wall that is built to stop water flooding onto a low area of land, especially from the sea Topics Geographyc2堰;堤;坝 - (especially British English)
a channel that carries water away from the land synonym ditchTopics Geographyc2渠;沟;壕沟 - (taboo, slang)
a word for a lesbian that is usually offensive 女同性恋者(常意含冒犯)