WordNet (r) 3.0 (2006):
tip 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, tump over] 2: turn from an upright or normal position; "The big vase overturned"; "The canoe tumped over" [syn: overturn, turn over, tip over, tump over]