basilisk

He threw in a few basilisk eggs, which are a known charm for the blessings of many fat babies.

But as I did so the head turned, and the eyes fell full upon me, with all their blaze of basilisk horror.

Much harder to lay one’s hands on a wild bull, a basilisk or a wolf.

Other animals, such as the modern green basilisk lizard, have tall, paddle-like tails that function more as social and sexual billboards than as swimming structures.

The catoblepas and, more famously, the basilisk, both described by Pliny the Elder, could kill with the single glance.