UN SCREW

unscrew

[uhn-skroo]
verb (used with object)
1.
to draw or loosen a screw from (a hinge, bracket, etc.).
2.
to unfasten or withdraw by turning, as a screw or lid.
3.
to open (a jar, bottle, etc.) by turning the lid or cover.
verb (used without object)
4.
to permit of being unscrewed.

Origin:
1595–1605; un-2 + screw

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World English Dictionary
unscrew (ʌnˈskruː)
 
vb
1.  (tr) to draw or remove a screw from (an object)
2.  (tr) to loosen (a screw, lid, etc) by rotating continuously, usually in an anticlockwise direction
3.  (intr) (esp of an engaged threaded part) to become loosened or separated: the lid wouldn't unscrew

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