1. Column with its shaft cut with a spiral sinking, generally as a flat band, sometimes with an annulet or two annulets between which mosaics are set, as in C13 Cosmati work.
2. Column-shaft with a spiral of leaved tendrils wound around it.
"wreathed column." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. (August 20, 2018). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/wreathed-column
"wreathed column." A Dictionary of Architecture and Landscape Architecture. . Retrieved August 20, 2018 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/wreathed-column