赶工做成的防壁
Breastwork \Breast"work`\ (br[e^]st"w[^u]rk`), n. 1. (Fort.) A defensive work of moderate height, hastily thrown up, of earth or other material. 2. (Naut.) A railing on the quarter-deck and forecastle.
breastwork n : fortification consisting of a low wall [syn: {parapet}]