1
general::
Phrase(s): back someone or something onto someone or something
to guide or move someone or something backwards onto someone or something. • I backed the car onto the flowers accidentally. • Using hand signals, the mechanic helped the driver back the car onto the ramp., Phrase(s): back onto someone or something
to go backwards, moving or rolling onto someone or something. • The motorcycle backed onto my toe. • Don’t back onto anything as you go down the driveway!
McGrawhill's American Idioms And Phrasal Verbs