bulwark
英 ['bʊlwək]
美['bʊlwɝk]
	    - n. 壁垒;保障;防波堤
 - vt. 保护;筑垒保卫
 
英英释意
- 1. an embankment built around a space for defensive purposes;
 - "they stormed the ramparts of the city"
 - "they blew the trumpet and the walls came tumbling down"
 
- 2. a fence-like structure around a deck
 
- 3. a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away