'Megalonyx' definitions:

Definition of 'Megalonyx'

From: GCIDE
  • Megalonyx \Meg`a*lon"yx\, n. [NL., from Gr. me`gas, mega`lh, great + 'o`nyx claw.] (Paleon.) An extinct quaternary mammal, of great size, allied to the sloth. [1913 Webster]