Canalis is a Latin word that means canal or channel. Synonyms for canalis include conduit, channel, duct, passage, tube, pipeline, shaft, and trench. A conduit refers to a passage through which liquids or gases flow, while a channel is a furrow or groove used for navigation or irrigation purposes. A duct is a tube or channel for conveying air, water, or steam, and a passage is a narrow way or channel that connects two areas. A tube is a long, hollow cylinder used for transmitting fluids or gases, while a pipeline is a long tube used for transporting gas or oil. A shaft is a long, narrow passage or opening used for ventilation or transportation, and a trench is a long, narrow, steep-sided channel intended to convey water or irrigation purposes.