term:

Tales

tales n pl

often attrib
[from the Medieval Latin phrase tales de circumstantibus such (persons) of the bystanders; from the use of the phrase in the writ summoning them]
: persons added to a jury from among those available in or about the courthouse or in the county to make up a deficiency in the number of jurors regularly summoned [a juror]

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.