unscrew Meaning, Definition & Usage

  1. verb loosen something by unscrewing it
    • unscrew the outlet plate
  2. verb loosen by turning
    • unscrew the bottle cap

WordNet

Un*screw" transitive verb
Etymology
1st pref. un- + screw.
Definitions
  1. To draw the screws from; to loose from screws; to loosen or withdraw (anything, as a screw) by turning it.

Webster 1913