Meaning of the Sanskrit Word: ksetresu

  ksetresu—in bodily fields    Bg 13.3
  ksetresu—in the living entities    SB 3.7.6
  ksetresu—in the gold mines    SB 7.7.21
  ksetresu—within the material fields    SB 7.7.21

Can't find any compound Sanskrit words containing ksetresu.