top ‧ ple /ˈtɒp ə l $ ˈtɑː-/ BrE AmE verb
[ Date: 1500-1600 ; Origin: top ]
1 . [intransitive and transitive] to become unsteady and then fall over, or to make something do this
topple over
A stack of plates swayed, and began to topple over.
2 . [transitive] to take power away from a leader or government, especially by force SYN overthrow :
This scandal could topple the government.