Distinguished Service Medal
- ☆ a U.S. military decoration awarded for exceptionally meritorious service to the government in a duty of great responsibility
- a British Royal Navy or Marines decoration awarded for distinguished service in time of war
See Distinguished Service Medal in American Heritage Dictionary 4
noun Abbr. DSM- A U.S. military decoration awarded for distinguished performance in a duty of great responsibility.
- A British military decoration awarded to noncommissioned officers and men in the Royal Navy and Royal Marines for distinguished conduct in war.