What is a “drawbridge”?

The story behind the answer

In medieval fortifications, the approach over the moat was a hinged roadway attached to the gatehouse. Chains, a windlass, and often counterweights let defenders haul it upright, sealing the entrance and presenting a sheer barrier. Lowered, it allowed traffic; raised, it turned the moat and wall into a continuous defense, often paired with a portcullis behind it.

The term “draw” means to pull, reflecting the mechanism. Later engineering refined the idea into bascule bridges in cities, but the castle version was primarily a defensive tool. Unlike a swing bridge that pivots sideways for ships, or a sabotaging “trap” bridge, or the temporary trestles erected during sieges, this was a permanent, controllable gateway central to the castle’s security.