/ ˈtɒpl; NAmE ˈtɑːpl/ verb
1.
[+ adv. / prep. ] to become unsteady and fall down; to make sth do this :
[ v ]
The pile of books toppled over.
[ vn ]
He brushed past, toppling her from her stool.
2.
[ vn ] to make sb lose their position of power or authority
SYN overthrow :
a plot to topple the President
••
WORD ORIGIN
mid 16th cent. (in the sense tumble about ): frequentative of the verb top .