Meaning of “overthrow” - Learner’s Dictionary

overthrow

verb [ T ] us uk /ˌəʊvəˈθrəʊ/ past tense overthrew, past participle overthrown

to remove someone from power by using force:

They were accused of plotting to overthrow / the government.
overthrow noun [ no plural ] us uk /ˈəʊvəθrəʊ/

the overthrow of the government

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