Midshipman
Bouvier's Law Dictionary and Concise Encyclopedia · John Bouvier; revised by Francis Rawle · 1914
Bouvier's Law Dictionary and Concise Encyclopedia
A naval cadet on a ship of war whose business it is to second and transmit the orders of the superior officers and assist in the management of the ship and its armament.
Webster.
In this country applied to the youths who are being trained at the Naval Academy. See Longevity Pay; Naval Academy.