Artificial intelligent assistant

acre-staff

acre-staff Obs.
  (See quotations.)

1611 Cotgr., Curette, a plough-staffe, or Aker-staffe (wherewith the cutter is cleansed). 1616 Surflet & Mark. Countrey Farme 532 The acker-staffe to cleanse the plowe when it shall be loaden with earth or other vild matter. 1650 Fuller Pisgah-Sight ii. viii. 174 Let none turn their flailes, aker⁓staves, sheep-hooks, shuttles, needles, into swords, till first with Gedeon they have a warrant from God. 1866 Rogers Agric. & Prices I. xxi. 539 The ploughman was provided with a pole shod with a flat iron, and called in later times an aker⁓staff.

Oxford English Dictionary

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