Meaning of the Sanskrit Word: yamasya

  yamasya—the controlling deity of death    SB 2.6.9
  yamasya—of the superintendent of death, Yamarāja    SB 5.10.17
  yamasya—of Yamarāja    SB 6.3.2
  yamasya—of Yamarāja, the superintendent of death, who gives judgment after death    SB 7.2.27

Can't find any compound Sanskrit words containing yamasya.