Meaning of the Sanskrit Word: vrsaparva

  vrsaparva—Vrsaparva    SB 6.6.29, SB 6.6.30, SB 6.6.31, SB 6.6.29-31, SB 6.10.19, SB 6.10.20, SB 6.10.21, SB 6.10.22, SB 6.10.19-22
  vrsaparva—the King of the demons    SB 9.18.26

Can't find any compound Sanskrit words containing vrsaparva.