Source : Webster's Revised Unabridged Dictionary (1913)

OEsophagus \[OE]*soph"a*gus\, n., OEsophageal
\[OE]`so*phag"e*al\, a., etc.
   Same as {Esophagus}, {Esophageal}, etc.

Source : WordNet®

oesophagus
     n : the passage between the pharynx and the stomach [syn: {esophagus},
          {gorge}, {gullet}]