Earthenware made from the reddish-brown clay found on the Aegean island of Lemnos WordNet 3.0 & Open English WordNet

Terra sigillata is a term with at least three distinct meanings: as a description of medieval medicinal earth; in archaeology, as a general term for some of the fine red Ancient Roman pottery with glossy surface slips made in specific areas of the Roman Empire; and more recently, as a description of a contemporary studio pottery technique supposedly inspired by ancient pottery. Wikipedia

A form of terra sigillata tableware made in ancient Gaul. Wiktionary

A type of fine, red Roman pottery made from the first to the third centuries AD in Gaul. Wiktionary