1. I stood ready with the boat-hook to make sure we didn't bump against the rocks of the mooring.

2. 30 He'd done no more than accidentally bump against some sailors aimlessly wandering from the passage next to the warehouse.

3. From Longman Dictionary of Contemporary English Bump Bump 1 / bʌmp / S3 verb 1 [intransitive always + adverb/preposition, transitive] HIT/Bump INTO to hit or knock against something Bump against I ran after him, Bumping against people in my hurry