What is the meaning of backwards?

adverb

• At or to or toward the back or rear.
  • usage: "he moved back"; "tripped when he stepped backward"; "she looked rearward out the window of the car"
  • synonyms: back, backward, rearward, rearwards
• In a manner or order or direction the reverse of normal.
  • usage: "it's easy to get the `i' and the `e' backward in words like `seize' and `siege'"; "the child put her jersey on backward"
  • synonyms: backward