<p><strong>Noun</strong></p><ul><li>a student, as at the U.S. Naval Academy, in training for commission as ensign in the Navy or second lieutenant in the Marine Corps.</li><li>an officer of the rank held by young men immediately upon graduating from the government naval schools.</li><li>the title and rank of such a graduate.</li><li>formerly, one of a class of boys or young men who formed the group from which officers were chosen.</li><li>Also called singingfish, any toadfish of the genus Porichthys, having many small luminous organs on the underside and producing a buzzing sound with its air bladder.</li></ul>