We don't have synonyms for danebrog yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are dannebrog.
(n) :
Alternative form of Dannebrog. [The national flag of Denmark, featuring a white Nordic cross atop a red background; is said to be the oldest continuously used national flag in the world, dating back to the 13th century.]
(n) :
Alternative form of Dannebrog. [The national flag of Denmark, featuring a white Nordic cross atop a red background; is said to be the oldest continuously used national flag in the world, dating back to the 13th century.]