θαιρός

Etymology
According to Beekes, a technical term, which Brugmann derived from, itself from. Compare.

On the other hand, Lubotsky and Mayrhofer derive the term from, and compare it with 🇨🇬, 🇨🇬, and perhaps 🇨🇬. Given the similarity in form and, to some extent, meaning between the two proto-Indo-European forms, it is possible they are connected.

Noun

 * 1) pivot of a door or gate
 * 2) axle of a chariot