WordNet sense 1 (a euphemism for defecation):

bm, bowel movement

WordNet sense 2 (an optical illusion of motion produced by viewing a rapid succession of still pictures of a moving object):

motion, apparent motion, apparent movement

WordNet sense 3 (a group of people with a common ideology who try together to achieve certain general goals):

front, social movement

WordNet sense 4 (a general tendency to change (as of opinion)):

drift, trend

WordNet sense 5 (a series of actions advancing a principle or tending toward a particular end):

campaign, cause, crusade, drive, effort

WordNet sense 6 (a change of position that does not entail a change of location):

motility, move