Meaning of the Sanskrit Word: bhusundibhih

  bhusundibhih—with bhusundi weapons    SB 4.10.11-12
  bhusundibhih—by bhusundis    SB 6.10.23
  bhusundibhih—with weapons called bhusundi    SB 8.10.36

Can't find any compound Sanskrit words containing bhusundibhih.