English to English

verb (v)

• loosen something by unscrewing it(verb.contact)

  Example:
  Unscrew the outlet plate.
  

  source: wordnet30
• loosen by turning(verb.contact)

  Example:
  Unscrew the bottle cap.
  

  Antonym:
  screw
  

  source: wordnet30
• To draw the screws from; to loose from screws; to loosen or withdraw (anything, as a screw) by turning it.(verb)

  source: webster1913