Originally: a stargazer fish (family Uranoscopidae), a fish of the genus Uranoscopus. Now chiefly (in form Uranoscopus): the genus itself.
Valid publication of the genus name: Linnaeus Systema naturae (ed. 10, 1758) I. 250.
Late 16th century; earliest use found in Thomas Fortescue (d. 1602), translator and alleged sorcerer. From classical Latin ūranoscopos fish with permanently upturned eyes (Pliny) or its etymon Hellenistic Greek οὐρανοσκόπος from ancient Greek οὐρανο- + -σκόπος.