weir Synonyms

blackweir pore penstock overfall moat lock levee lasher gate flume fence emunctory portcullis sea wall sluice waste-way revolving door beaver dam aboideau floodgate seawall waterfall wall stank spout spillway embankment egress burrock bund bulkhead buffer breakwater boom block barrier barricade barrage bar canal causeway channel earthwork dyke drain door ditch dike defense dam