What is the meaning of pull back?

verb

• Pull back or move away or backward.
  • usage: "The enemy withdrew"; "The limo pulled away from the curb"
  • synonyms: withdraw, retreat, pull away, draw back, recede, retire, move back
• Use a surgical instrument to hold open (the edges of a wound or an organ.
  • synonyms: retract, draw back
• Move to a rearward position; pull towards the back.
  • usage: "Pull back your arms"
• Stretch back a bowstring (on an archer's bow. )
  • usage: "The archers were drawing their bows"
  • synonyms: draw
• Make a retreat from an earlier commitment or activity.
  • usage: "We'll have to crawfish out from meeting with him"; "He backed out of his earlier promise"; "The aggressive investment company pulled in its horns"
  • synonyms: retreat, back out, back away, crawfish, crawfish out, pull in one's horns, withdraw