Meaning of the Sanskrit Word: drastuh

  draṣṭuḥ—of the seer    SB 2.5.17, SB 2.9.1, SB 3.7.11, SB 3.31.45-46
  draṣṭuḥ—of the speaker    SB 3.26.33
  draṣṭuḥ—of Him who is the seer of everything    SB 5.19.12
  draṣṭuḥ—of the Supersoul, who witnesses everyone’s activities    SB 9.24.57

Can't find any compound Sanskrit words containing drastuh.