ETYM Old Fren. action, Latin actio, from agere to do. Related to Act.
1. Something done (usually as opposed to something said).
2. An act by a government body or supranational organization.
3. The operating part that transmits power to a mechanism.
4. The series of events that form a plot.
5. The state of being active; SYN. activity, activeness.
6. The trait of being active and energetic and forceful.
7. The most important or interesting work or activity in a specific area or field