Something done so as to accomplish a purpose.
A way of motion or functioning.
Knead bread with a rocking action.
A fast-paced activity.
an Action movie
A mechanism; a moving part or assembly.
a rifle action
(music): The set of moving mechanical parts in a keyboard instrument which transfer the motion of the key to the sound-making device.
(slang) sexual intercourse.
She gave him some action.
The distance separating the strings and the fretboard on the guitar.
He saw some Action in the Korean War.
(law) A charge or other process in a law court (also called lawsuit and actio).
(mathematics) A homomorphism from a group to a group of automorphisms.
One of the earliest uses of groups, according to lore, was the study of the Action of S3 on the equilateral triangle.