hub plank

== English == === Noun === hub plank (plural hub planks) (engineering, historical) A horizontal plank attached along the truss of a highway bridge, at the height of a wagon wheel hub, to prevent the wheels from hitting the truss. === References === “hub”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.