What is the meaning of cement?

noun

• Concrete pavement is sometimes referred to as cement.
  • usage: "they stood on the grey cement beside the pool"
• A building material that is a powder made of a mixture of calcined limestone and clay; used with water and sand or gravel to make concrete and mortar.
• Something that hardens to act as adhesive material.
• Any of various materials used by dentists to fill cavities in teeth.
• A specialized bony substance covering the root of a tooth.
  • synonyms: cementum

verb

• Make fast as if with cement.
  • usage: "We cemented our friendship"
• Cover or coat with cement.
• Bind or join with or as if with cement. .