Definition of overthrowing:
(v) :
(transitive) To bring about the downfall of (a government, etc.), especially by force; to usurp.
(n) :
A removal, especially of a ruler or government, by force or threat of force; usurpation.
(v) :
(transitive, intransitive) To throw (something) so that it goes too far.
(n) :
(sports) A throw that goes too far.
(n) :
(cricket) A run scored by the batting side when a fielder throws the ball back to the infield, whence it continues to the opposite outfield.
(v) :
(transitive, now rare) To throw down to the ground, to overturn.