bend back
1. Of a person, to lean backwards. I bent back to catch my dog before he sprinted past me through the open door. I bent back to pick up all the socks I'd dropped on my way down the hall.
2. Of a thing, to push backwards. A noun or pronoun can be used between "bend" and "back." If you bend those curtains back, this room will get a lot more sunlight. Bend back the corner of the page to mark your place in the book.
bend someone or something back
to curve or arch someone or something backward. We bent the child back a little so we could examine the spider bite. Ouch! Don't bend back my hand! Bend the branch back so we can get a better view.
bend back
to lean or bend backwards. He bent back to pick up the book, and he fell. When she bent back, she ripped something.