In addition to other answers here, Merriam Webster offers the word Firedrake
Definition of firedrake:
a fire-breathing dragon especially in Germanic mythology
First Known Use of firedrake
before the 12th century, in the meaning defined above
The word is relevant to Smaug and other dragons in J R R Tolkien’s fiction (Silmarillion and The Hobbit).
Dragons, in the language of the elves.
The term appears in Tolkien’s Silmarillion
Glaurung was the first of the uruloki, and Ancalagon the greatest
The uruloki included not only the winged dragons but also the wingless fire- and cold-drakes.
There are many accounts online. Here is an example from Screenrant
Dragons are divided into categories based on their ability to fly, and breathe fire. The most infamous is Smaug, along with Glaurung and Ancalogan, who are classified as Fire-Drakes, which are the typical fantasy standard for these creatures. Tolkien used the terms “Dragon” and “Wyrms” almost interchangeably.
Some dragons in the Legendarium could not breathe fire, and are regarded as Cold-drakes. Typically, these creatures did not have legs or wings, while some could breathe either smoke, or mist. Despite lacking the raw power of their Fire siblings, Cold-drakes still possessed sharp claws and armor-like scales.