Shamrock Wood CarvingShamrock Wood Carving. Have you ever wondered about the meaning of the Shamrock? Prior to Christianity and the work of St. Patrick, the Druids believed that they could thwart evil spirits and danger by carrying a shamrock. A three leaf shamrock would enable them to see the evil spirits and escape in time. While trying to convert the Irish into Christians, St. Patrick used the shamrock to explain the holy trinity with each leaf representing the Father,