counterguard

n. 垒障

词形变化

counterguards 复数 counterguards

释义与例句

n.
  1. 1.

    A low outwork before a bastion or ravelin, consisting of two lines of rampart parallel to the faces of the bastion, and protecting them from a breaching fire.

    政治 军事

词源

From counter- + guard.

来源：wiktionary