The portable or movable apparatus and machinery of a rallroad, particularly such as moves on the road, viz., engines, cars, tenders, coaches, and trucks. See Beardsley v. Ontario Bank, 31 Barb. (N. Y.) 635; ohlo & M. R. Co. v. weber, 96 111. 448; Pittsburgh, etc., R. Co. v. Backus, 154 U. S. 421, 14 Sup. Ct. 1114, 38 L. Ed. 1031
Source: Black's Law Dictionary 2nd Ed (1910)