Where does “просигналить” come from?
просигналить (Russian) comes from Russian сигна́лить, from Russian сигна́л, from Medieval Latin signale, from Latin signālis, from Latin signum, from Proto-Italic seknom, from Proto-Indo-European sek- — to cut, cut off, sever.
просигналить (Russian): to signal; to honk
Ancestry of “просигналить”, step by step