seawall (n.)
- abutment
- anchorage
- arc-boutant
- backstop
- bank
- bar
- barrage
- barrier
- basin
- beam
- berth
- boom
- breakwater
- breastwork
- buffer
- bulkhead
- bulwark
- buttress
- buttressing
- cofferdam
- dam
- defense
- dike
- ditch
- dock
- dockage
- dockyard
- earthwork
- embankment
- fence
- gate
- groin
- harbor
- harborage
- haven
- jam
- jetty
- landing
- levee
- logjam
- marina
- milldam
- moat
- mole
- mound
- parapet
- pier
- port
- portcullis
- quay
- rampart
- road
- roadblock
- roads
- roadstead
- seaport
- shipyard
- shoulder
- slip
- wall
- weir
- wharf
- work
