Juror (noun)

1. A person who serves on a jury and is responsible for determining the guilt or innocence of a person on trial.
2. A person who is chosen to serve on a jury.

Origin:

Late middle english: from old french juré, past participle of jurer "swear", from latin jurare.

Examples:

1. He served as a juror in the trial.
2. She was chosen as a juror.
3. The jury is made up of 12 jurors.
4. The juror's duty is to hear the evidence and make a fair decision.
5. The juror's verdict.