to move backwards, bumping into someone or something; to move a car backwards into something, such as a garage or a parking space. (See also back someone or something into someone or something.) I'm sorry. I didn't mean to back into you.I backed into the potted plant.
back someone or something into someone or something
to guide or move someone or something backwards into someone or something. Don't back your car into anyone.Using hand signals, the attendant backed all the cars into the parking spaces.