from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A high tide in which the water rises to a given level, recedes, and then rises again.
- n. A low tide in which the water recedes to a given level, rises, and then recedes again.
- n. In ancient Roman construction, an earthwork; a mound; a raised work.
from the GNU version of the Collaborative International Dictionary of English
- n. An earthwork; a mound; a raised work.
from The Century Dictionary and Cyclopedia
- n. In Roman antiquity, an earthwork or any artificial mound or rampart, as, in Rome, the agger of Servius Tullius.
- n. A Roman road or military way, so called because these roads were raised in the middle to turn water to the sides.
From Middle English agger ("heap"), "pile", from Latin agger ("rubble"), "mound", "rampart", from ad- + gerere, to carry, to bring (Wiktionary)