Definition of astroturfing in English:

astroturfing

Pronunciation /ˈæstroʊˌtərfɪŋ/

mass noun

mass noun
  • The deceptive practice of presenting an orchestrated marketing or public relations campaign in the guise of unsolicited comments from members of the public.

Origin

1970s (in the sense ‘the process of covering an area with Astroturf’): from Astroturf.