What is another word for sloping trough?
Pronunciation: [slˈə͡ʊpɪŋ tɹˈɒf] (IPA) 
A sloping trough is often used for a variety of applications, such as draining water or sloping the topography of a landscape. There are numerous synonyms that can be used to describe a sloping trough. Some common alternatives include a drainage channel, a drainage trough, a graded trough, a gradient channel, a slanted groove or a deviated duct. Each of these descriptions refers to a channel or trough that is angled or sloped to guide water or other substances towards a specific destination. Whichever term you choose, a sloping trough can be a valuable asset for managing water flow in a variety of settings, from agriculture to construction and beyond.
