Lock picking can be defined as a non-destructive method of bypassing locks without using a key. It is accomplished by mimicking the function of the key by lifting and setting the lock's pins into the proper positions needed to allow the lock to open. Don't worry; this is easier than it seems. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.