Meaning of the Sanskrit Word: sisyam

  śiṣyam—because of his being a disciple    SB 8.15.34
  śiṣyam—unto his disciple    SB 8.19.29
  śiṣyam—unto such a disciple    SB 8.20.14
  śiṣyam—unto his disciple, Vṛṣaparvā    SB 9.18.27

Can't find any compound Sanskrit words containing sisyam.