The word "esophagi" is the plural form of the word "esophagus," which refers to the muscular tube that connects the throat to the stomach. There are several synonyms for the word "esophagus" that you can use interchangeably depending on the context of your writing. These synonyms include gullet, food pipe, throat tube, swallowing tube, and pharynx. While each of these words may have slightly different connotations or levels of formality, they all refer to the same anatomical structure in the human body. As a writer, it is helpful to have a variety of synonyms at your disposal to keep your writing fresh and engaging.