The stigmata are marks that replicate the wounds that Christ received at the Crucifixion on his hands, feet and side. Certain Christian saints (for example, Saint Francis of Assisi) are believed to have miraculously received the stigmata as marks of their piety. Pronunciation here.
Giotto. St. Francis Receiving the Stigmata. Fresco. Upper Basilica of St. Francis, Assisi, Italy. 1297-1300.