DICT.TW Dictionary Taiwan

 Sub-base n. Arch. The lowest member of a base when divided horizontally, or of a baseboard, pedestal, or the like.
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 Sub-bass, n. Mus. The deepest pedal stop, or the lowest tones of an organ; the fundamental or ground bass. [Written also sub-base.]
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 subbase
      n : the lowest molding of an architectural base or of a
          baseboard