unobstruct

verb

unobstruct

verb

Etymology From un- + obstruct.

1

To free from an obstruction.

[…] a pivoted device movable in one direction by the plunger, and means for moving said pivoted device in the other direction to engage the head of a nail when the plunger is moved to unobstruct the feed channel.1909, Official Gazette of the United States Patent Office, page 30:

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