Draw-BRIDGE, one that is fastened with hinges at one end only, so that the other may be drawn up; in which case, the bridge stands upright, to hinder the passage of a ditch or moat.
Flying or floating BRIDGE, is generally made of two small bridges, laid one over the other in such a manner, that the uppermost stretches and runs out, by help of certain cords, running through pulleys placed along the sides of the under bridge, which push it forwards, till the end of it joins the place it is intended to be fixed on.