<p><strong>Noun</strong></p><ul><li>an expanse or area of land, water, etc.; region; stretch.</li><li>Synonyms: territory, district.</li><li>Anatomy: a definite region or area of the body, especially a group, series, or system of related parts or organs: the digestive tract.</li><li>a bundle of nerve fibers having a common origin and destination.</li><li>a stretch or period of time; interval; lapse.</li><li>Roman Catholic Church: an anthem consisting of verses of Scripture, sung after the gradual in the Mass from Septuagesima until the day before Easter and on certain other occasions, taking the place of the alleluias and the verse that ordinarily accompany the gradual.</li><li>Ornithology: a pteryla.</li></ul>