from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The sharp edge or ridge formed by two surfaces meeting at an angle, as in a molding.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A sharp edge or ridge formed by the intersection of two curved surfaces
- n. Buttocks.
from the GNU version of the Collaborative International Dictionary of English
- n. The sharp edge or salient angle formed by two surfaces meeting each other, whether plane or curved; -- applied particularly to the edges in moldings, and to the raised edges which separate the flutings in a Doric column.
from The Century Dictionary and Cyclopedia
- n. A sharp edge, as of a squared stone or piece of wood. Specifically
- n. In architecture, the line, edge, or hip in which the two straight or curved surfaces of a body, forming an exterior angle, meet; especially, the sharp ridge between two adjoining channels of a Doric column.
Alteration of Old French areste, fishbone, spine; see arête.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French areste, from Latin arista ("beard (of grain), fishbone") (Wiktionary)