noun🔗ShareA very small brook; a streamlet."After the rain, a tiny rill trickled down the hillside. "geographynatureenvironmentChat with AIVocabulary GamePractice Reading
verb🔗ShareTo trickle, pour, or run like a small stream."The sweat started to rill down his forehead as he nervously waited to give his presentation. "natureenvironmentgeographyChat with AIVocabulary GamePractice Reading
noun🔗ShareA long, narrow depression that resembles a channel, found on the surface of various lunar and planetary bodies."The lunar rover spotted a rill cutting across the dusty plain. "geologyastronomyspaceChat with AIVocabulary GamePractice Reading
