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Meaning of agger

ag•ger

Pronunciation: (aj'ur), [key]
— n.
  1. Also called
    1. a high tide in which the water rises to a certain level, recedes, then rises again.
    2. a low tide in which the water recedes to a certain level, rises slightly, then recedes again.
  2. (in ancient Roman building) an earthen mound or rampart, esp. one having no revetment.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.