Meaning of the Sanskrit Word: kasyah

  kasyah—Kasya    SB 9.17.1-3, SB 9.21.23
  kasyah—whose    SB 4.25.42
  kasyah—of which woman    SB 9.14.20
  kasyah—the King of Kasi (Varanasi)    Bg 1.16-18

Can't find any compound Sanskrit words containing kasyah.