purros describes the red appearance of a dragon and a horse in Revelation.

The attested use describes a red appearance: the nominative singular masculine form modifies a dragon in Revelation 12:3 and a horse in Revelation 6:4.

1. Red appearance of a depicted creature · dominant

   In Revelation 12:3, πυρρός is nominative singular masculine in the description of a great dragon; the APB renders the phrase “a great fiery-red dragon.” In Revelation 6:4, the same form describes another horse; the APB renders “another horse, fiery red.”

   Revelation 12:3Revelation 6:4

In the Anselm Project Bible: The APB presents the term as “fiery-red” with the dragon in Revelation 12:3 and “fiery red” with the horse in Revelation 6:4. These renderings occur in a translation.