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Jack-the-rags
jack up
jack-up
jackal
jackanapes
jackass
jackboot
jackdaw
jacked
jacket
jacket potato
jackfish
jackfruit
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jackie hangman
Jackie-O
jackknife
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jackscrew

jack·screw [ ják skr ] (plural jack·screws)


noun 
Definition:
 
mechanical engineering 
Same as  screw jack


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