English to English

verb (v)

• pull back or move away or backward(verb.motion)

  Synonym:
  move back, pull away, pull back, recede, retire, retreat, withdraw
  Antonym:
  advance, go on, march on, move on, pass on, progress
  

  source: wordnet30
• use a surgical instrument to hold open (the edges of a wound or an organ)(verb.contact)

  Synonym:
  pull back, retract
  

  source: wordnet30