Meaning of the Sanskrit Word: arjunayoh

  arjunayoḥ—and Arjuna    Bg 18.76
  arjunayoḥ—of the Arjunas    SB 1.12.21
  arjunayoḥ—of the two arjuna trees    SB 2.7.27
  arjunayoḥ—the two arjuna trees    SB 10.10.26

Can't find any compound Sanskrit words containing arjunayoh.