Sluice (6)
'sluice' is the definition.
(thesaurus)
This is the entire clue.
(Another definition for floodgate that I've seen is " Barrier to water".)
'sluice' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for gutter that I've seen before include "Channel to carry away rainwater" , "Person who empties" , "Channel for carrying off water" , "Channel running along the eaves of a building" , "Roadside channel" .)