バラスばらすFreq.FrequencyTop 100,000Meanings1nounballast (road/railway foundation)abbreviationAbbreviation of バラスト, used in construction and railway contexts for the crushed stone or gravel layer beneath tracks or roads.See also: バラスト線せん路ろの下したにバラスを敷しき詰つめる。They lay ballast under the railway track.
