Meaning of the Sanskrit Word: tasu

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

Can't find any compound Sanskrit words containing tasu.