성문이나 성벽 바깥에 세워진 방어용 망루나 외보.
A fortified outpost or gateway, such as an outer defense to a city or castle, often consisting of a double tower over a gate or drawbridge.
예문:
"The attackers were halted at the barbican before they could reach the main gates of the fortress."
"Archaeologists discovered the remains of a medieval barbican that once protected the city's northern entrance."
"The heavy portcullis of the barbican was lowered to prevent the enemy's cavalry from entering."