Meaning of the Sanskrit Word: guhyakau

  guhyakau—which in a former millennium had been demigods    SB 10.9.22
  guhyakau—the two sons of Kuvera.    SB 10.10.6
  guhyakau—unto the two young demigods.    SB 10.10.39

Can't find any compound Sanskrit words containing guhyakau.