__ into; meet unexpectedly

I believe the answer is:

bump

(Other definitions for bump that I've seen before include "Jolt - collision - swelling" , "Bounce" , "Swelling caused by a blow perhaps" , "Light blow or jolting collision" , "Collide - protuberance" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.