(n.) In classical architecture, a vertically faced member immediately below the circular base of a column; also, the lowest member of a pedestal; hence, in general, the lowest member of a base; a sub-base; a block upon which the moldings of an architrave or trim are stopped at the bottom.

baluster balustrade banister base caryatid colonnade column dado die footstalk jack newel-post pedestal pedicel peduncle pier pilaster pile piling pillar pole post queen-post shaft socle staff stalk stanchion stand standard stem subbase surbase trunk upright