2. Pelta ornament common on Classical friezes (especially in the Roman Doric Order according to Vignola), consisting of a wide shield-like form with its extremities on either side returning as heads or scrolls.
3. Circular shield of small size.
"buckler." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. (September 26, 2018). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/buckler
"buckler." A Dictionary of Architecture and Landscape Architecture. . Retrieved September 26, 2018 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/buckler