e·soph·a·gus also oe·soph·a·gus 
(ĭ-sŏfə-gəs)
(ĭ-sŏfə-gəs)n. pl. e·soph·a·gi (-jī′, -gī′) also oe·soph·a·gi
The muscular tube by which food passes from the pharynx to the stomach; the gullet.
[Middle English isophagus, from Medieval Latin ēsophagus, from Greek oisophagos, arbitrary medical coinage perhaps from ois- : future tense stem of pherein, to carry; see oit- in the Appendix of Indo-European roots + -phagos, food (unattested sense) (from phagein, to eat; see bhag- in the Appendix of Indo-European roots).]
e·soph′a·geal (-jēəl) adj.