noun
channel; duct; watercourse; flow passage
Refers to a path or conduit through which a fluid (water, air, etc.) flows. Used in engineering, geography, and everyday descriptions of waterways or pipes.
大雨で川の流路が変わった。
The river's channel changed due to heavy rain.
この装置は空気の流路を確保する必要がある。
This device needs to secure an airflow passage.