Dykes are structures built to control water levels and protect land from flooding. They are typically made of earth, rock, or concrete and can be found along rivers, lakes, and coastal areas. Dykes help manage water flow, prevent erosion, and create habitats for wildlife. In some contexts, the term "dyke" is also used as a slang term for a lesbian, particularly one who presents in a more masculine manner. This usage can be seen as empowering within the LGBTQ+ community, but it may also be considered derogatory by some. Understanding the context is important when using this term.