flat rim, and the term is typically used when it is necessary to describe this. In complicated pottery shapes, where the normal vocabulary of mouldings is appropriate, cavetto may be used in that sense for any concave curving section.<ref>Hellenistic Pottery and Terracottas], By Homer A. Thompson et al., examples B42 and B43</ref> In the terminology of archaeology, especially relating to pottery (and generally not used of pottery after antiquity, or outside archaeology), a cavetto zone or cavetto is a "sharp concavity encircling the body of a vessel", and also a "deep but narrow neck", both used in relation to mainly upright vessels for storing or cooking food. See also Cymatium Notes References Gibson, Alex M., Prehistoric Pottery for the Archaeologist, 1997, A&C Black, , 9780718519544, google books Perrault, Claude, Ordonnance for the Five Kinds of Columns after the Method of the Ancients, translated by Indra Kagis McEwenand and edited by Alberto Perez-Gomez, 1996, Getty Publications, , 9780892362325, google books Summerson, John, The Classical Language of Architecture, 1980 edition, Thames and Hudson World of Art series, Winter, Nancy A., "Monumentalization of the Etruscan Round Moulding in Sixth Century BCE Central Italy", in Monumentality in Etruscan and Early Roman Architecture: Ideology and Innovation'', edited by Michael Thomas, Gretchen E. Meyers, 2012, University of Texas Press, , 9780292749825, [https://books.google.co.uk/books?id=wOezNYCGLc4C&pg=PA61 google books Architectural terminology Pottery Ancient Egyptian architecture