Meaning of the Sanskrit Word: nisithe

  nisithe—late at night    SB 10.3.7, SB 10.3.8, SB 10.3.7-8
  nisithe—during the third part of the night    SB 6.8.21
  nisithe—in the dead of night    SB 4.13.47

Can't find any compound Sanskrit words containing nisithe.