ἡμερόσκοπος

ον, Subst.
A. watching by day, φύλαξ Ar. Av. 1174: as Subst., day-watcher, Hdt. 7.183,192, S. Ant. 253, X. HG 1.1.2, Aen. Tact.6.1,al.: metaph., πιστὸν ἡ. ὀφθαλμὸν ἕξω A. Th. 66.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project