προτρυγητήρ

ῆρος, ε, ὁ
A. harbinger of the vintage, name of the star Vindemiatrix (ε Virginis), interpol. in Arat. 138, cf. Hipparch. 2.5.5, 3.1.4, Gem. 3.6, Ptol. Tetr. 24: pl., Plu. 2.308a.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project