Turned over with the blade of a plough to create furrows (usually for planting crops). / (figuratively, rare) Well-trodden or well-researched, previously explored.

(geology) An instrument that monitors the slow surface displacement of an active geologic fault in the earth.

(baseball) Initialism of earned run average, a baseball statistic. / (electronics) Initialism of electrically reconfigurable array. / (military) Initialism of explosive reactive armor.

(baseball) The older of the two professional baseball leagues within Major League Baseball.