Definition of "who" [who]

• What or which person or persons: Who left? (pronoun)
• Used as a relative pronoun to introduce a clause when the antecedent is a person or persons or one to whom personality is attributed: the visitor who came yesterday; our child, who is gifted; informed sources who denied the story. (pronoun)
• The person or persons that; whoever: Who believes that will believe anything. (pronoun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The gem merchant that got robbed had some influence with the _Districo Federales_ down in Mexico City; he wanted all three of the guys who robbed him put away as a lesson to other hotshot _bandidos _who might try to pull the same thing."
• "For every game, there is a winner and a loser….we have all seen who the bottom line loosers are for this…..who are the winners in this."
• "At least it seems the bareback bones have finally been reprieved and for once a movie will be re-brought upon the audience with a natural real sense and to tell you the truth; who would have ever have seen RDJr with an actual demeanor of being able to take care of himself..who would have known..look forward to the movie"