aggĕrātĭo (adg-), ōnis, f. [1. aggero],
a heaping up; in concr., that which is heaped up , a mole , dike (not before the Aug. per.): naves supra adgerationem, quae fuerat sub aquā, sederunt, Vitr. 10, 22, 263; Just. 2, 1 fin.