basilisk

A mythical snake-like dragon, so venomous that even its gaze is deadly.

the deadly look of the basilisk

The queſtion is in vvhat part of this Serpent the poyſon doth lye; Some ſay in the head alone, and that therefore the Bazeliske is deafe, bycauſe the Ayre vvhich ſerueth the Organe of hearing, is reſolued by the intenſiue calidity: but this ſeemeth not to bee true, […]

A type of dragon used in heraldry.

Any tree-dwelling lizard of the genus Basiliscus: the basilisk lizard.

As a guide to start your collection we'd suggest either iguanas, tejus, swifts, basilisks, horned toads or alligator lizards.

A type of large brass cannon.

Awake ye men of Memphis, heare the clange / Of Scythian trumpets, heare the Baſiliſkes, / That roaring, ſhake Damaſcus turrets downe, […]

An infohazard or cognitohazard, especially a Langford's basilisk.

A basilisk, in this context, is information that can hurt you simply because you are aware of it.

Suggesting a basilisk (snake-like dragon): baleful, spellbinding.

Well, She is so basilisk; there's no death in her eyes […]

her gaze became more basilisk in its expression, and her countenance bore some similitude to that of a handsome fiend