synchro

noun

1. (countable, informal, uncountable)Any synchronized event, such as synchronized swimming.

   “Patrick Borkowski develops strength and conditioning programs for acrobatic and combat sports, including synchro, at the Olympic Training Center in Colorado Springs.”

2. (countable, uncountable)A type of rotary electrical transformer that is used for measuring the angle of a rotating machine such as an antenna platform. In its general physical construction, it is much like an electric motor.
3. (abbreviation, alt-of, countable, ellipsis, informal, uncountable)Ellipsis of synchromesh.