tump over in WordNet English dictionary

1. cause to overturn from an upright or normal position
   "The cat knocked over the flower vase"; "the clumsy customer turned over the vase"; "he tumped over his beer"
   overturn  tip over  turn over  upset  knock over  bowl over  tump over 
   
2. turn from an upright or normal position
   "The big vase overturned"; "The canoe tumped over"
   overturn  turn over  tip over  tump over