A peer-reviewed journal just means that the article was reviewed by scholars and meets certain standards with regards to a publication or a discipline. Peer reviewed/scholarly articles are typically written by professors or specialists. A great clue that something is peer reviewed or scholarly: the article contains a list of references or works cited. For more information on peer-reviewed or scholarly journals, go to this libguide: http://libguides.uah.edu/scholarly. Most databases will have an option to search only "peer-reviewed" or "scholarly" journals.