pendulum
nounmasculine/ˈpẽdulu/low
pen·du·lo
Definition
A body suspended so that it swings freely under the influence of gravity, used in instruments like clocks or in physics experiments.
The pendulum of the old clock swung with regularity.
The experiment demonstrated the motion of the pendulum.
Common collocations
pendulum motionpendulum clock
Etymology
Do latim 'pendulus' (pendente, oscilante).