A barbican (from Old French: barbacane) is a fortified outpost or fortified gateway, such as at an outer defense perimeter of a city or castle, or any tower situated over a gate or bridge which was used for defensive purposes. Europe. Medieval Europeans typically built barbicans outside, or at the edge of, a main line of defenses, and connected them to defensive walls with a walled road called the neck. Barbicans would thus control the entrance to a city or castle at the "choke point".
https://en.wikipedia.org/wiki/Barbican
A barbican (from Old French: barbacane) is a fortified outpost or fortified gateway, such as at an outer defense perimeter of a city or castle, or any tower situated over a gate or bridge which was used for defensive purposes. Europe. Medieval Europeans typically built barbicans outside, or at the edge of, a main line of defenses, and connected them to defensive walls with a walled road called the neck. Barbicans would thus control the entrance to a city or castle at the "choke point".
