1. an embankment built to prevent flooding
2. a ditch or watercourse
3. a wall of rock formed by magma that cooled in a crack
Usage: geology

Examples

• The ancient dyke protected the village from river floods.
• Workers reinforced the dyke before the storm season.
• Water flowed slowly through the drainage dyke.
• The farmer dug a dyke to redirect water from his fields.
• Geologists studied the volcanic dyke cutting through the cliff face.
• The dyke was built centuries ago using local stone.