a projecting part of a fortification built at an angle to the line of a wall, so as to allow defensive fire in several directions 棱堡 ■a natural rock formation resembling such a fortification 棱堡状岩石 ■(figurative)an institution, place, or person strongly maintaining particular principles, attitudes, or activities (喻)堡垒 cricket's last bastion of discrimination. 歧视板球的最后堡垒。
语源
mid 16th cent.: from French, from Italian bastione, from bastire 'build'