Meaning of the Sanskrit Word: janamejayah

  janamejayaḥ—was named Janamejaya    SB 9.2.35-36
  janamejayaḥ—King Janamejaya    SB 9.20.2
  janamejayaḥ—the eldest son    SB 9.22.36
  janamejayaḥ—Janamejaya    SB 9.23.2

Can't find any compound Sanskrit words containing janamejayah.