English edit

 
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Etymology edit

Blend of split-level +‎ ranch.

Noun edit

splanch (plural splanches)

  1. (US, architecture) A house with three levels inside a two-level skin.
    • 2005, Mathias B. Freese, The i Tetralogy, page 213:
      We barely see the world at such a level, for we are surburbing in our splanches, looking for ledges to set down our plastic menorahs for all the gentiles to see.