n. An instrument for recording pulsations, consisting of a membrane stretched over a drum-like cylinder, or a ring, to which is attached a recording-needle.n. A drum; specifically, the bass drum; also, something resembling a drum, as an elastic membrane stretched over a cup-shaped vessel, used in various mechanical devices.n. In architecture: A cylindrical stone, such as one of the blocks of which each constitutes a course of the shaft of a column; a drum.n. The interior part, or core, within the leaves, of Corinthian and Composite capitals, which bears some resemblance to a drum. It is also called the vase, and the campana or bell.n. The wall of a circular temple surrounded with columns.n. The circular vertical part of a cupola; also, the basis of a cupola when this is circular.n. A kind of lobby or vestibule of timber-work with folding doors, and covered with a ceiling, as within the porches of churches, etc., to break the current of air or draft from without.n. A circular frame on which silk or other stuff is stretched for the purpose of being embroidered: so called from its resemblance to a drum. Machines have been constructed for tambour-working, and are still used.n. Silk or other stuff embroidered on a tambour.n. In fortification, a defensive work formed of palisades, intended to defend a road, gate, or other entrance.To decorate with needlework, as a piece of silk, muslin, or other stuff which has previously been strained on a tambour-frame to receive embroidery.To do tambour-work; embroider by means of a tambour-frame.