What defines a movement

A Movement-Main Entry: move·ment
Pronunciation: \ˈmüv-mənt\
Function: noun
Date: 14th century
1 a (1) : the act or process of moving; especially : change of place or position or posture (2) : a particular instance or manner of moving b (1) : a tactical or strategic shifting of a military unit : maneuver (2) : the advance of a military unit c : action, activity —usually used in plural
2 a : tendency, trend b : a series of organized activities working toward an objective; also : an organized effort to promote or attain an end
3 : the moving parts of a mechanism that transmit a definite motion