What Exactly does Dracarys Mean in Game of Thrones?

Game of Thrones was the epic American fantasy series produced by the HBO cable network. It is considered to be one of the most renowned series portraying the story of a medieval country's civil war. It offered a particular indulgence of vicarious, guilt-free barbarism. The best part about this epic series is that while watching it; what you expect never happens, and what is never expected always happens.

This legendary drama television series includes plentiful characters. Some of the major characters include:

Eddard (Ned) Stark
Catelyn (Cat) Tully
Daenerys Stormborn Targaryen
Jon Snow
Tyrion (The Imp) Lannister
Bran Stark
Sansa Stark
Arya Stark
Cersei Lannister
Ser Jaime (The Kingslayer) Lannister
Petyr (Littlefinger) Baelish
Varys (The Spider)
Robert Baratheon
Ser Jorah Mormont
Viserys Targaryen
Khal Drogo
Prince Joffrey (Joff) Baratheon
Sandor (The Hound) Clegane
Robb Stark
Maester Luwin
Theon Greyjoy
Ser Rodrik Cassel
Tywin Lannister
Bronn
Lysa Arryn
Jeor Mormont (Commander Mormont)
Maester Aemon

Dothraki's were depicted as the tribe of warriors who roam the continent of Essos. Their characters were illustrated as the strongest among various groups of warriors. Amongst all the Dothraki's, Khal Drogho (husband of Daenerys Targaryen) was considered to be the most robust warrior.

The Valyrians, also known as the Blood of Dragon, are a group of people on the Essos continent,  native to the Valyrian Peninsula. Daenerys Targaryen was a Valyrian who got married to Khal Drogho forcefully.

Dracarys is the High Valyrian word for Dragonfire. It is used by the master of the dragons- Daenerys Targaryen. Whenever she says Dracarys, the dragon used to expel fire from his mouth on their enemies. Daenerys used to give this instruction in the battlefield.

Daenerys trained the dragons at the time when the dragons were newly hatched. She tamed her dragons in such a way that whenever she commands Dracarys, they expel fire on their enemies.