n. In architecture, the flat square table or slab under the molding of the base of a Roman or Renaissance column, of which it constitutes the foundation, and the bottom of the order; also, an abacus; also, a square molding or table at the base of any architectural part or member, or of a pedestal, etc. See phrases below, and cuts under base, column, and capital.n. A gymnastic apparatus, a vaulting-box, consisting of several woodensections placed on top of one another, so as to make possible variations in height.n. An apparatus used in therapeutic gymnastics on which the patient sits or lies.