The term 'Barbary Coast Pirate' refers to a type of CORSAIR, which is a privateer or pirate who operated in the Mediterranean Sea during the 16th to 19th centuries. These pirates were often from North African countries such as Algeria, Morocco, and Tunisia, and they were known for attacking merchant ships and taking their cargo. They were also known for their cruelty and violence, and their activities caused much disruption to trade in the region.