Definition of topple verb from the Oxford Advanced American Dictionary

     

    topple

     verb
    verb
    NAmE//ˈtɑpl//
     
    Verb Forms present simple I / you / we / they topple
     
    he / she / it topples
     
    past simple toppled
     
    -ing form toppling
     
     
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  1. 1[intransitive, transitive] to become unsteady and fall down; to make something do this + adv./prep. The pile of books toppled over. He toppled backward into the river. topple somebody/something + adv./prep. He brushed past, toppling her from her stool.
  2. 2[transitive] topple somebody/something to make someone lose their position of power or authority synonym overthrow a plot to topple the president
See the Oxford Advanced Learner's Dictionary entry: topple