tip-upDefinition of tip-up adjective denoting a seat in a theatre or other public place that is designed to tilt up vertically when unoccupied so as to let people pass easily. denoting a rear platform of a truck or lorry that may be raised up, enabling a load to be discharged. noun North American a device used in ice-fishing in which a wire attached to the rod is tripped, raising a signal flag, when a fish takes the bait. tip-up in other Oxford dictionaries Definition of tip-up in the US English dictionary
