a mound erected before a besieged city to sustain battering engines

    agger eris, m    [ad + GES-], a mass, heap, collection, pile: aggere paludem explere, Cs.: longius erat agger petendus, Cs.: fossas aggere conplent, V.—A heap of rubbish, pile of stones, bank, mound, dam, pier, hillock, wall, dike, mole, rampart: aggeribus niveis informis terra, with snow-drifts, V.: proelia miscent Aggeribus murorum, V.: molirique aggere tecta, a stockade, V.: aggeribus ruptis amnis exit, dams, V.: muniti aggere portūs, a breakwater, O.: viae agger, a causeway, V.—Poet.: aggeres Alpini, i. e. mountains, V.— A funeral pile, O. — A platform (for a speaker), O. — In war, a mound erected before a besieged city to sustain battering engines: vineis ad oppidum actis, aggere iacto, Cs.: aggerem iacere, S.: promovere ad urbem, to bring near to the city, L.; usu. of wood; hence, ut agger, tormenta flammam conciperent, Cs.: aggerem ac vineas incendium hausit, L. — Fig.: esset agger oppugnandae Italiae, a rampart for attacking. — Freq. of mounds or terraces in Rome, built for defence, and afterwards used as promenades, a boulevard, terrace: maximus (Tarquinii): (Servius) aggere circumdat urbem, L.: Aggere in aprico spatiari, H.— A mound to protect a camp: seges aggere cingit, V.