D defs.my
Entry 1 sense Webster, 1913

Plinth

/plĭnth/ · IPA /plɪnθ/
01 n. In classical architecture, a vertically faced member immediately below the circular base of a column; also, the lowest member of a pedestal…
  1. 1.
    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. See Illust. of Column.(Arch.) See: Column