Astroturf (n.)youdaoicibaDictYouDict[Astroturf 词源字典]
1966, proprietary name for a kind of artificial grass, so called because it was used first in the Houston, Texas, Astrodome, indoor sports stadium. See astro- + turf. Houston was a center of the U.S. space program.[Astroturf etymology, Astroturf origin, 英语词源]