Meaning of the Sanskrit Word: bhusundibhih

  bhuśuṇḍībhiḥ—with bhuśuṇḍī weapons    SB 4.10.11-12
  bhuśuṇḍibhiḥ—by bhuśuṇḍis    SB 6.10.23
  bhuśuṇḍibhiḥ—with weapons called bhuśuṇḍi    SB 8.10.36

Can't find any compound Sanskrit words containing bhusundibhih.