A petty jury is a term used in legal proceedings to refer to the group of individuals who are selected to hear evidence and determine the guilt or innocence of a defendant. While the term "petty jury" is commonly used, there are several synonyms that can be used to refer to the same group. These include trial jury, petit jury, or simply jury. Regardless of the terminology used, the role of the jury is an important one in the legal system, as they serve as a representation of the community and help to ensure that justice is served.