Meaning of the Sanskrit Word: tasu

  tasu—in them    SB 6.9.9, SB 6.14.11, SB 9.23.32
  tasu—in that    SB 2.10.11
  tasu—unto them    SB 3.3.9
  tasu—in all of them    SB 5.21.7
  tasu—in so many wives    SB 6.6.23
  tasu—in the water    SB 6.9.10
  tasu—to every one of them    SB 8.16.14

Can't find any compound Sanskrit words containing tasu.