n. A squirrel-monkey; a small South American monkey of the genus Saimiris (Geoffroy) or Chrysothrix (Wagler), having a bushy non-prehensile tail: extended to some other small squirrel-like monkeys of the same country, and confused with saguin (which see). Also written samiri, saimari, and rarely Englished saimir. See cut under squirrel-monkey.