; (2) the term conviction means a judgment or disposition in criminal court against a person following a finding of guilt by a judge or jury; (3) the term destroy means to render a file unreadable, whether paper, electronic, or otherwise stored, by shredding, pulverizing, pulping, incinerating, overwriting, reformatting the media, or other means; (4) the term expunge — (A) means to destroy a record and obliterate the name of the person to whom the record pertains from each official index or public record; and (B) has the effect described in section 5044(c), including— (i) the right to treat an offense to which an expunged record relates, and any arrest, juvenile delinquency proceeding, adjudication, or other result of such proceeding relating to the offense, as if it never occurred; and (ii) protection from civil and criminal perjury, false swearing, and false statement laws with respect to an expunged record; (5) the term expungement hearing means a hearing held under section 5044(b)(2)(B); (6) the term expungement petition means a petition for expungement filed under section 5044(b); (7) the term juvenile means— (A) except as provided in subparagraph (B), a person who has not attained the age of 18; and (B) for the purpose of proceedings and disposition under this chapter for an alleged act of juvenile delinquency, a person who has not attained the age of 21; (8) the term juvenile delinquency means the violation of a law of the United States committed by a person before attaining the age of 18 which would have been a crime if committed by an adult, or a violation by such a person of section 922(x); (9) the term juvenile nonviolent offense means an act of juvenile delinquency that is not— (A) a violent crime (as defined in section 103 of the Juvenile Justice and Delinquency Prevention Act of 1974 ( 42 U.S.C. 5603 )); or (B) a sex offense (as that term is defined in section 111 of the Sex Offender Registration and Notification Act ( 42 U.S.C. 16911 ))