A "peddler's pack" refers to a bag or sack used by merchants or peddlers to carry their wares as they travel and sell their goods. Synonyms for "peddler's pack" include knapsack, backpack, satchel, haversack, kitbag, and shoulder bag. Another term that is sometimes used is "merchant's pack," which also refers to a bag used for carrying goods for sale. Depending on the context, some other related terms may be used, such as vendor bag or salesman's satchel. Regardless of the term used, these bags were often crucial for the livelihoods of peddlers and merchants in earlier times.