A sudarium (Latin) was a "sweat cloth", used for wiping the face clean. Small cloths of various sorts, for which sudarium is a general term, played a role in Ancient Roman formal manners and court ceremonial, and many such uses transferred to Christian liturgical usage and art. Sudarium specifically refers to two relics of the Passion of Jesus, the Sudarium of Oviedo and the Veil of Veronica. Another sudarium is found in Altmünster, Germany, and was supposedly given to Saint Bilihildis; it is locally venerated since the 15th century.
In the Roman Catholic and other Western churches, the term sudarium has been used for several ornamental textile objects:
The term Sudra (סודרא) for a headdress in Judaism is a loan from the Latin term.