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 Armed Forces Reserve Medal (with bronze hourglass) is the basic award and is earned after ten years of qualifying service; however, if a service member qualified for the M device before he or she has ten years of service, that person may wear the medal/ribbon without the bronze hourglass but with the M device.