gadroon
noun
ga·droon gə-ˈdrün 
1
: the ornamental notching or carving of a rounded molding
2
: a short often oval fluting or reeding used in decoration
gadroon transitive verb
gadrooning
gə-ˈdrü-niŋ
noun 
Word History
Etymology
borrowed from French godron, going back to Middle French goderon "concave ornamentation on a drinking vessel," probably from godet "cup without a foot or handle" (probably derivative from the Germanic base of Middle Dutch codde "cylindrical piece of wood") + -eron, diminutive suffix — more at codpiece
First Known Use
1694, in the meaning defined at sense 1