ballast1, s.1Nau: Aer: Ballasta m. Ship in ballast(-trim), long faoi bhallasta. To discharge, throw out, ballast, ballasta a chaitheamh amach. F: (Of pers.) He has ballast, tá sé an-staidéarach. He lacks ballast, duine luathintinneach é, níl aon staidéar ann. 2Civ.E: Rail: Ballasta m.
ballast2, v.tr.1Nau: Aer: Cuirim ballasta i. 2Civ.E: Rail: Ballastaím.