unscrew

Verb (intransitive), Verb (transitive)

un=screw

CIDE DICTIONARY

unscrew, v. t. [1st pref. un- + screw.].

To draw the screws from; to loose from screws; to loosen or withdraw (anything, as a screw) by turning it. [1913 Webster]

unscrew, v.
1 tr. & intr. unfasten or be unfastened by turning or removing a screw or screws or by twisting like a screw.
2 tr. loosen (a screw).

For further exploring for "unscrew" in Webster Dictionary Online

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