D defs.my
Entry 1 sense Webster, 1913

Quadra

/kwăd'-rə/ · Quad·ra · IPA /kwˈædrə/
01 n. The plinth, or lowest member, of any pedestal, podium, water table, or the like.
pl. Quadræ ((#))
  1. 1.
    The plinth, or lowest member, of any pedestal, podium, water table, or the like.(Arch.)