πρόκα

Adv.
A. forthwith, straightway, Hp. ap. Gal. 19.132, A.R. 1.688; in Hdt. πρόκα τε or πρόκατε, 1.111, 6.134, 8.65, 135; so also in Call. in PSI 19.1092.52.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project