A seat without arms or back, cushioned and stuffed: a high stool; -- so called from its resemblance to a drum.

a low stool in the shape of a drum

A stool or small seat that can also be used as a stand.

A low upholstered stool, originally used at court during the 17th and 18th centuries.

(From tabour, a small drum.) Low upholstered footstool, French, 18th century.