- Also called dou·ble tide [duhb-uhl tahyd] /ˈdʌb əl ˈtaɪd/ .Oceanography.
- a high tide in which the water rises to a certain level, recedes, then rises again.
- a low tide in which the water recedes to a certain level, rises slightly, then recedes again.
- (in ancient Roman building) an earthen mound or rampart, especially one having no revetment.
- an earthwork or mound forming a rampart, esp in a Roman military camp