Definition of mormon

• n. - A genus of sea birds, having a large, thick bill; the puffin.
• n. - The mandrill.
• n. - One of a sect in the United States, followers of Joseph Smith, who professed to have found an addition to the Bible, engraved on golden plates, called the Book of Mormon, first published in 1830. The Mormons believe in polygamy, and their hierarchy of apostles, etc., has control of civil and religious matters.
• a. - Of or pertaining to the Mormons; as, the Mormon religion; Mormon practices.