Definition of "exemplar"

exemplar¹

/ɛɡˈzɛm.plə/

noun
plural exemplars
1. Something fit to be imitated; an ideal, a model.
  Quotations
  A ray of light amid all this nonsense was Gwyn Topham's piece in the Guardian, which was timely, measured, accurate and of appropriate tone. That this single report stood out so clearly as an exemplar is a scathing comment in itself on the volumes of drivel surrounding it.
  2020 August 26, Nigel Harris, “Comment Special: Catastrophe at Carmont”, in Rail, page 4
2. A role model.
3. Something typical or representative of a class; an example that typifies.
4. A pattern after which others should be made; an archetype.
5. A well known usage of a scientific theory.
6. A handwritten manuscript used by a scribe to make a handwritten copy; the original copy of what gets multiply reproduced in a copy machine.
7. A copy of a book or piece of writing.
  Quotations
  To amend the same [default] according to the true exemplars.
  1539, Richard Taverner, “Preface”, in Taverner's Bible

exemplar²

adjective
comparative more exemplar, superlative most exemplar
1. (obsolete) Exemplary.
  Quotations
  In our age we have no patterne of motherly affection more exemplare, than yours.
  1603, Michel de Montaigne, chapter 8, in John Florio, transl., The Essayes […], book II, London: […] Val[entine] Simmes for Edward Blount […]