References in classic literature ?
As he spoke he struck her on the terrible tasselled aegis--so terrible that not even can Jove's lightning pierce it.
As he spoke his strong hand hurled his javelin from him, and the spear struck Achilles on the leg beneath the knee; the greave of newly wrought tin rang loudly, but the spear recoiled from the body of him whom it had struck, and did not pierce it, for the gods gift stayed it.
A pung ent smell is one that is so strong and sharp that it pierces the nose.