Meaning of the Sanskrit Word: barhisman

  barhiṣman—O King Prācīnabarhiṣat    SB 4.27.19, SB 4.28.1, SB 4.29.47
  barhiṣman—O King Prācīnabarhi    SB 4.28.65

Can't find any compound Sanskrit words containing barhisman.