Artificial intelligent assistant

jack-weight

ˈjack-weight Obs.
  [Jack n.1 7.]
  A weight forming part of the mechanism in an obsolete form of a roasting-jack.

1659 Lond. Chanticleers xii. in Hazl. Dodsley XII. 352 A woman's anger should be like jack-weights—quickly up and quickly down. a 1784 Johnson Acc. Early Life, I remembered a little dark room behind the kitchen, where the jack⁓weight fell through a hole in the floor, into which I once slipped my leg. 1814 Last Act i. iii, A short thick squat zort of a mon, fit for the devil's jack-weight.

Oxford English Dictionary

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