Astroturf

[ as-truh-turf ]
/ ˈæs trəˌtɜrf /

Trademark.

a brand of carpetlike covering made of vinyl and nylon to resemble turf, used for athletic fields, patios, etc.
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British Dictionary definitions for astroturf

Astroturf
/ (ˈæstrəʊˌtɜːf) /

noun trademark

a type of grasslike artificial surface used for playing fields and lawns

Word Origin for Astroturf

C20: from Astro(dome), the baseball stadium in Texas where it was first used + turf
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012