An optical instrument for examining the inside of the esophagus(noun)
WordNet. Princeton University. 2010.
Use "oesophagoscope" in a sentence
"We had no knives, and no artery forceps, and not a stitch of catgut; but we had an oesophagoscope, and the very latest possible pattern of cystoscope, and a marvellous set of tools for plating fractures."