∙ A small monkey, now specifically a Central and South American monkey of the genera Callithrix, Cebuella, Callibella, or Mico, with claws instead of nails, and a rather primitive layout. [from 14th c.]
∙ A hideous figure; a grotesque. [15th-19th c.] obsolete
∙ An unappealing or foolish man. [from 16th c.] pejorative, now rare