1
general::
Phrase(s): back down (from someone or something)
to yield to a person or a thing; to fail to carry through on a threat. • Jane backed down from her position on the budget. • It’s probably better to back down from this situation; looks like you are at a disadvantage., Phrase(s): back down (on something)
to lessen or drop an earlier rigid position on something; to yield something in an argument. • She backed down on her demands. • In the end, she backed down., Phrase(s): back down (something)
to go down something backwards, such as a ladder or inclined driveway. • Harry backed down the ladder safely. • Looking behind him, he backed down slowly.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
1. Reverse one's upward course, descend. For example, When she saw the wasps' nest on the roof, she hastily backed down the ladder. This literal usage usually refers to something one has climbed, such as a ladder or mountain. [Mid-1800s] 2. Also, back off. Retreat or yield. For example, As the watchdog began to snarl the letter carrier backed off, or You have a good point; now don't back down when you present it to the board. [First half of 1900s] Also see BACK AWAY, def. 2.
American Heritage Idioms