Artificial intelligent assistant

wring-staff

ˈwring-staff, -stave rare—0.
  [Cf. wring-bolt, wrain-stave.]
  A staff for inserting in an eye of a ring-bolt.

1815 Burney Dict. Marine, Wring-staves..are strong pieces of wood used with the Wring-Bolts. [Hence in Crabb (1823) and some later Dicts.] 1884 Imp. Dict. s.v., Wring-staff;..called also Wrain-staff.

Oxford English Dictionary

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