noun: A long narrow and shallow trough between ridges on a beach, running parallel to the coastline.
noun: A shallow troughlike depression that's created to carry water during rainstorms or snow melts; a drainage ditch.
noun: Bioswale, a shallow trough dug into the land on contour (horizontally with no slope), whose purpose is to allow water time to percolate into the soil.
noun: A shallow, usually grassy depression sloping downward from a plains upland meadow or level vegetated ridgetop.
noun: (UK, dialectal) A gutter in a candle.
noun: A river, a tributary of the Ure in North Yorkshire, England.
noun: The Swale, a channel between the Isle of Sheppey and the Kentish mainland
noun: A local government district with borough status in Kent, England, created in 1974 with its headquarters in Sittingbourne and named after the channel
verb: Alternative form of sweal (melt and waste away, or singe) [(intransitive) To burn slowly.]