couatl

English Wikipedia has an article on:

couatl

Wikipedia

Borrowed from Classical Nahuatl cōātl (“snake”); influenced by Quetzalcoatl.

couatl (plural couatls)

1. (fantasy, mythology) A feathered flying serpent with psionic abilities.
   • 1993, Doug Stewart, Gary Gygax, Monstrous Manual, page 46:

     So rare as to be considered almost legendary, the couatl is one of the most beautiful creatures in existence.

   • 2012, Timothy Groves, The Book Of Creatures, page 44:

     Winged, feathered serpents of considerable size and power, the couatl seeks to defend its territory against all invaders. Couatls are not malicious by nature, and frequently appoint themselves the guardians of humanoids within their domain, provided said humanoids are willing to offer it the occasional tribute.

   • 2019, Keith Ammann, The Monsters Know What They're Doing:

     For this reason, a couatl probably won't use it except to save a seriously wounded ally from imminent death, and in that case, it follows up with a sanctuary spell on its next turn, then spends the remainder of combat closely defending that ally.

• Toluca

couatl

1. Alternative spelling of coatl

Compare Classical Nahuatl coatl, Morelos Nahuatl kouatl, Tetelcingo Nahuatl cohuatl.

couatl

1. Snake.

• Instituto Lingüístico de Verano, A.C. (2006) “Pohtlahocuilimeh”, in Pequeño diccionario ilustrado: Náhuatl de los municipios de Zacatlán, Tepetzintla y Ahuacatlán‎, segunda edición edition, Tlalpan, D.F. México: Instituto Lingüístico de Verano, A.C., page 10