tump over v 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" [syn: {overturn}, {tip over}, {turn over}, {upset}, {knock over}, {bowl over}] 2: turn from an upright or normal position; "The big vase overturned"; "The canoe tumped over" [syn: {overturn}, {turn over}, {tip over}]