Definition of who:

part of speech: relative pronoun

A word which refers to a person; which of many, as, " who is the person who has a right to exercise it?" used interrogatively.

Usage examples:

  • Who can it be? P. Chalmers Mitchell in "Thomas Henry Huxley; A Sketch Of His Life And Work".
  • Who went for the doctor? Marie Belloc Lowndes in "Jane Oglander".
  • Who shall I tell her called? Charles Weathers Bump in "The Mermaid of Druid Lake and Other Stories".
  • I know who you are. Pauline Lester in "Marjorie Dean High School Freshman".

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The title of the highest order of judges in the Turkish empire. ...