Peer review of articles helps ensure high quality in scholarly publishing.
Submitted articles are reviewed by other scholars in the field (peers) for relevance and contribution to the field, appropriateness of methodology, quality of discussion, etc.
These journals are also known as Referred journals.
Examples of peer-reviewed journals would be:
Journal of Popular Culture
Journal of Health Politics, Policy and Law
Sociology of Sport Journal
An informative 3-minute video created by Peabody Library, Vanderbilt University.
Note: Not everything in a journal is peer reviewed; letters to the editor, book reviews, news items, and other short works without listed references are typically not peer reviewed the way more substantive articles are.