Swing'-bēam, n.
n. (Railway Mach.) A cross-piece, sustaining the car-body, and so suspended from the framing of a truck, that it may have an independent lateral motion. [See Illust. of Truck.]
n. (Railway Mach.) A cross-piece, sustaining the car-body, and so suspended from the framing of a truck, that it may have an independent lateral motion. [See Illust. of Truck.]