"A projecting watchtower, or other advanced work, before the gate of a castle or fortified town. The term Barbican was more specially applied to the outwork intended to defend the drawbridge, which in moden fortifications is called the tete du pont." — Chambers' Encyclopedia, 1875

Barbican

"A projecting watchtower, or other advanced work, before the gate of a castle or fortified town. The…

"Details of a castle: 1. Fortified approach 2. Drawbridge 3. Moat 4. Donjon or keep 5. Towers flanking main entrance 6. Angle towers for defense of outer wall 7. Chapel." -Foster, 1921

Castle Parts

"Details of a castle: 1. Fortified approach 2. Drawbridge 3. Moat 4. Donjon or keep 5. Towers flanking…

The drawbridge of a castle.

Drawbridge

The drawbridge of a castle.