Dike or dyke, can mean:

• A slang term for lesbian
• Another word for levee, a long wall or bank built to hold water, or to separate land areas
  • Dykes may have sluice gates at intervals. They may be raised to let water through.
• Dyke (geology), where magma or sediment cut across normal rock formations
• Another word for diagonal pliers, a hand tool used by electricians and others
• Dike, the Greek goddess of moral justice, one of the Horae