soil pipe

from WordNet (r) 3.0 (2006)

soil pipe
    n 1: drain that conveys liquid waste from toilets, etc.

from The Collaborative International Dictionary of English v.0.48

Soil \Soil\, n. [OE. soile, F. sol, fr. L. solum bottom, soil;
   but the word has probably been influenced in form by soil a
   miry place. Cf. {Saloon}, {Soil} a miry place, {Sole} of the
   foot.]
   1. The upper stratum of the earth; the mold, or that compound
      substance which furnishes nutriment to plants, or which is
      particularly adapted to support and nourish them.
      [1913 Webster]

   2. Land; country.
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            Must I thus leave thee, Paradise? thus leave
            Thee, native soil?                    --Milton.
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   3. Dung; faeces; compost; manure; as, night soil.
      [1913 Webster]

            Improve land by dung and other sort of soils.
                                                  --Mortimer.
      [1913 Webster]

   {Soil pipe}, a pipe or drain for carrying off night soil.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Soil pipe \Soil pipe\
   A pipe or drain for carrying off night soil.
   [Webster 1913 Suppl.]