1.Lit. to move inadvertently or crash into someone. Excuse me. I didn't mean to bump into you.The child on the bicycle nearly bumped into me.
2.Fig. to chance on someone; to meet someone by chance. (Not normally with physical contact.) Guess who I bumped into downtown today? I ran into Bill Jones yesterday.
to unexpectedly meet someone or find something Last week, Jill bumped into an old college friend she hadn't seen in years.The story is about an amateur detective who lives in Maine and has an amazing ability to bump into real-life murder stories.