cȳmătĭum (cūm-) or -on, ii, n., = κυμάτιον (a small wave); in architecture,
I The volute of an Ionic column , Vitr. 3, 5, 7; 4, 1, 7.—
II A channel, a waved moulding, an ogee , Vitr. 3, 5, 10; 4, 3, 6; 4, 3, 8; 4, 6, 2; Tert. Idol. 8.
·noun A capping or crowning molding in classic architecture. ...
Webster's Dictionary of the English Language