
1) Artificial channel for water 2) Conduit 3) Penstock 4) Sluice
Found on
https://www.crosswordclues.com/clue/sluiceway

1) Sluice
Found on
https://www.crosswordclues.com/clue/sluiceway

artificial waterway used to carry off surplus water.
Found on
http://charlesdickenspage.com/glossary.html

• (n.) An artificial channel into which water is let by a sluice; specifically, a trough constructed over the bed of a stream, so that logs, lumber, or rubbish can be floated down to some convenient place of delivery.
Found on
http://thinkexist.com/dictionary/meaning/sluiceway/

An open channel inside a dam designed to collect and divert ice and trash in the river (e.g., logs) before they get into the turbine units and cause damage. (On several of the Columbia River dams, ice and trash sluiceways are being used as, or converted into, fish bypass systems.)
Found on
http://www.encyclo.co.uk/local/21804
Sluice'way` noun An artificial channel into which water is let by a sluice; specifically, a trough constructed over the bed of a stream, so that logs, lumber, or rubbish can be floated down to some convenient place of delivery.
Found on
http://www.encyclo.co.uk/webster/S/125

Type: Term Pronunciation: slūs′wā Synonyms: spillway
Found on
http://www.medilexicon.com/medicaldictionary.php?t=82521
No exact match found.