Wörterbuch (en): Tambour
de:
Tambour (m) (Kuppelunterbau)
fr:
Tambour (m) / Trommel (f)
it:
Tamburo (m)
es:
Tambor (m)
A vertical architectural element with a mostly round, and sometimes also polygonal or oval cross-section, which acts as a connecting element between a mostly square structure and a dome or monastery vault roof.