A jack (mechanical lifting device) which is operated by turning a leadscrew.
A leadscrew; a screw used to translate rotational into linear motion.
jackscrews
jackscrews
noun
plural of jackscrew
jackstraw
jackstraw
adj
(obsolete, of a person) Of no substance or worth.
Resembling a bundle of jackstraws that has been strewn on a surface.
noun
(dated) An insignificant person.
(usually plural) One of the pieces used for the game called jackstraws or pick-up sticks.
jackstraws
jackstraws
noun
plural of jackstraw
jasperware
jasperware
noun
(ceramics) A form of pottery that has a stoneware body which is either white or colored, which is noted for its matte finish. It is a popular blue-and-white ware, but it comes in many other colors.