Basilisk
/ˈbæs.ɪ.lɪsk/
noun
A mythical (and heraldic) snake-like dragon type, reputed to be so venomous that its gaze was deadly.
“The deadly look of the basilisk”
A type of dragon used in heraldry.
A tree-dwelling type of lizard of the genus Basiliscus - the basilisk lizard
adjective
Suggesting a basilisk (snake-like dragon): baleful, spellbinding.