"trass" in German trass Duckstein Tuffstein Trass "trass" German translation Trass {m} trass Detailed translations for "trass" trass 1. geology, a light-coloured tuff trass der Duckstein{masculine} trass(also: calcareous tufa, calc-tufa, calc-tuff, sedimentary tufa) der Tuffstein{masculine} 2. mining, Rhenish trass der Trass{masculine}