To hit something with force. (Cambridge Dictionary)
To hurt part of your body by hitting it against something hard. (Cambridge Dictionary)
If you bump into something or someone, you accidentally hit them while you are moving. (Collins Dictionary)
A bump is the action or the dull sound of two heavy objects hitting each other. (Collins Dictionary)
A bump is a minor injury or swelling that you get if you bump into something or if something hits you. (Collins Dictionary)
A light blow or a jolting collision. (Oxford Dictionaries)
A sudden forceful blow, impact, or jolt. (Merriam – Webster)
Why a Bump on Your Wrist May Be a Cause for Concern.
Speed Bumps Complete Kits Ideal For Cars, Vans & HGV’s.