Introducing a list. The colon is used to introduce a list of items. The bookstore specializes in three subjects: art, architecture, and graphic design. Do not, however, use a colon when the listed items are incorporated into the flow of the sentence.
Definition of medal for Students. : a piece of metal often in the form of a coin with design and words in honor of a special event, a person, or an achievement.
The Medal of Honor, United States. Created during the Civil War as the only medal for valor (bravery, courage, whatever you want to call it) it became the top medal for Americans in combat. Authorized by an act of Congress and usually awarded by the President, most recipients die in the process of earning the medal.