Bible Dictionaries
Barbacan

Webster's Dictionary

(1):

(n.) An opening in the wall of a fortress, through which missiles were discharged upon an enemy.

(2):

(n.) See Barbican.

(3):

(n.) A tower or advanced work defending the entrance to a castle or city, as at a gate or bridge. It was often large and strong, having a ditch and drawbridge of its own.

Bibliography Information
Webster, Noah. Entry for 'Barbacan'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​b/barbacan.html. 1828.