auto

Etymology 1

From Ancient Greek αὐτός (autós, “self”), metanalyzed from auto- in words such as automatic, autopilot, and automobile.

adj

1. (automotive) Clipping of automatic. (of a gearbox/transmission)
   It's an auto sedan which we picked up from a wholesaler locally.

noun

1. (chiefly attributive) An automobile.
   My brother is an auto mechanic.
2. (uncountable) A setting for automatic operation.
   Put it on auto.
3. (automotive) An automatic gearbox/transmission.
   A body-coloured centre pillar signalled the arrival of an electronic four-speed auto, slight suspension revisions and minor trim changes.
4. (automotive) A car with an automatic gearbox/transmission.
   It wasn't too bad but we did hire an auto (couldn't imagine changing gears with my right hand).

verb

1. (intransitive, dated) To travel by automobile.
   The food was excellent and well served, and it recalled the Norman cities he had autoed to. 1907, Automotive Industries, volume 16, page 711
   Christmas Day we decided to spend in snow, in order to feel more at home, and so we autoed up 5000 ft. to Peira Cava and reveled in the winter sports, autoing back to the roses and “summer time” at nightfall. 1924, The Smith Alumnae Quarterly, volumes 16-17, page 318

Etymology 2

Clipping of autorickshaw, from Hindi ऑटो रिक्शा (ŏṭo rikśā).

noun

1. (India) An autorickshaw.
   ... users are often unable to note down the number of the taxi or the auto as the driver will just zoom past.