motionlaw
nounUK /ˈməʊʃən lɔː/
US /ˈmoʊʃən lɔː/
A motion law is a rule that tells us how things move.
The teacher explained the motion law that says a ball keeps rolling until something stops it.
OTHER MEANINGS
2. A rule in science that describes how objects speed up, slow down, or change direction.
Newton's motion law helps us understand why a skateboard rolls downhill.
3. A legal rule about how a request is made in a court or meeting.
The club followed the motion law to vote on a new rule.
4. A rule in a game about how players are allowed to move.
The motion law in chess says the knight moves in an L shape.