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Webster 1913 Edition

Adj.

[See

Of or pertaining to peat, or turf; of the nature of peat, or turf; peaty; turfy.

Sir. W. Scott.

turbinaceous ‎(comparative more turbinaceous, superlative most turbinaceous)

(rare) Resembling or relating to peat or turf.
- Sir Walter Scott
  The real turbinaceous flavour no sooner reached the nose of the Captain, than the beverage was turned down his throat with symptoms of most unequivocal applause.