basilisk:1

noun
bas*i*lisk \ ˈba-sə-ˌlisk \ ˈba-zə- \
13th century{ds||1||}
  • a legendary reptile with fatal breath and glance
  • any of several crested tropical American lizards (genus Basiliscus of the family Corytophanidae) related to the iguanas and noted for their ability to run on their hind legs

basilisk:2

adjective
basilisk \
15th century
  • suggesting a basilisk : baleful, spellbinding
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