breakwater structure is a type of…
- en fixed freestanding structure (n) ➜
 - en flow control device (n) ➜
 - en inert artifact (n) ➜
 - en stationary artifact (n) ➜
 
Links to other resources
- umbel.org /umbel/sc/BreakwaterStructure
 - sw.opencyc.org /2012/05/10/concept/en/BreakwaterStructure