D defs.my
Entry 2 senses Webster, 1913

Unstop

· Un·stop · IPA
01 v. t. To take the stopple or stopper from; as, to unstop a bottle or a cask.
  1. 1.
    To take the stopple or stopper from; as, to unstop a bottle or a cask.
  2. 2.
    To free from any obstruction; to open.