tonō uī, -, āre 2 TA-, to make a loud noise, roar, resound, thunder: caelum tonat omne fragore, V.: Pericles fulgere tonare dictus est.

—With acc, to thunder forth: ore deos, invoke thunderingly, V.

—To thunder: ingens Porta tonat caeli, V.: si fulserit, si tonuerit: tonans Iuppiter, H.: sub axe tonanti Sternitur aequor, V.