Fossa - fossa, trench or ditch, hence any concavity.⏎
Epigastric - epi, upon; gaster, stomach; originally used to designate the area of the abdomen overlying the stomach.⏎
Esophagus - oisophagos, gullet.⏎
Cricoid - krikos, ring.⏎
Foramen - foramen, aperture, hole.⏎