Airbenders first learned their bending from the sky bison, a sacred creature in the Air Nomad culture. The bison typically use their massive beaver-like tail to create gusts of wind and, as the name suggests, can fly without any visible means of propulsion. It is also said that the airbenders had borrowed the arrow mark from the flying bison for their traditional tattoos. These tattoos symbolize one’s mastery of the airbending art, and are given to a practitioner once their training is complete. Unlike other nations, all Air Nomads are born airbenders, due to the high amount of spirituality infused in the culture.
On Aang’s wanted poster and Sozin’s scroll, the word airbending is written as 截氣神功 (jié qì shén gōng) which translates as “The Divine Ability to Halt Air”, while the word airbender is written as 風脅功師 (fēng xié gōng shī) which translates as “Wind-Coercing Master”