barrel vault

Noun

 * 1)  A simple roof having a curved, often semicircular cross section; used to span large distances in railway stations, churches, etc. Usually supported on columns.
 * 2)  A building profile featuring a rounded profile to the roof on the short axis, but with no angle change on a cut along the long axis.

Translations

 * Catalan: volta de canó
 * Dutch:
 * Finnish: tynnyriholvi
 * Galician:
 * German:
 * Italian: volta a botte
 * Norwegian: tønnehvelv
 * Spanish:
 * Swedish: