astrobleme (n.) Look up astrobleme at Dictionary.com
"crypto-explosion structure on Earth caused by meteorite or asteroid impact," 1961, literally "star-wound," from astro- "star" + Greek bleme "throw of a missile; wound caused by a missile," from ballein "to throw" (from PIE root *gwele- "to throw, reach"). Coined by U.S. geologist Robert S. Dietz (1914-1995).