bump into

Verb

 * 1)  To collide with.
 * He bumped into the wall. I guess that's a risk you take when you read while walking.
 * 1)  To cause (a thing) to collide with.
 * The roads were so slippery that I couldn't stop, and I bumped my car into the car in front of me.
 * 1)  To meet by chance.
 * We bumped into each other at the library yesterday.
 * We bumped into each other at the library yesterday.