'Lusus naturae' definitions:

Definition of 'lusus naturae'

From: WordNet
noun
A person or animal that is markedly unusual or deformed [syn: freak, monster, monstrosity, lusus naturae]

Definition of 'Lusus naturae'

From: GCIDE
  • Lusus naturae \Lu"sus na*tu"r[ae]\n. [L., fr. lusus sport + naturae, gen. of natura nature.] Sport or freak of nature; a deformed or unnatural production. [1913 Webster]