Adam: Adam’s apple [18] The original apple in question was the forbidden fruit of the tree of the knowledge of good and evil, which the serpent in the Garden of Eden tricked Eve into eating, and which she in turn persuaded Adam to eat. It was traditionally believed that a piece of it stuck in Adam’s throat, and so it became an appropriate and convenient metaphor for the thyroid cartilage of the larynx, which protrudes noticeably in men. [Adam etymology, Adam origin, 英语词源]