Meaning of “motion” - Learner’s Dictionary

motion

noun uk us /ˈməʊʃən/
MOVEMENT [ U ]

the way something moves or the fact that it is moving:

The motion of the boat made him feel sick.
ACTION [ C ]

a single action or movement:

She made a motion with her hand.
SUGGESTION [ C ]

a suggestion that you make in a formal meeting or court of law:

to propose/oppose a motion
set sth in motion

to make something start to happen

→ See also slow motion , go through the motions

(Definition of “motion noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)