definition of
motion

[1] #1 motion n. [gesture] the use of movements (especially of the hands) to communicate familiar or prearranged signals. wn

[2] #2 motion n. [movement] a natural event that involves a change in the position or location of something. wn

[3] #3 motion n. [movement, move, motility] a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility". wn

[4] #4 motion n. a state of change; "they were in a state of steady motion". wn

[5] #5 motion v. [gesticulate, gesture] show, express or direct through movement; "He gestured his desire to leave". wn