Meaning of PENDULUM in English

PENDULUM

n. a weight suspended so as to swing freely, esp. a rod with a weighted end regulating the movement of a clock's works.

Phrases and idioms:

swing of the pendulum the tendency of public opinion to oscillate between extremes, esp. between political parties.

Etymology: L neut. adj. (as PENDULOUS)

Oxford English vocab.      Оксфордский английский словарь.