Artificial intelligent assistant

decussion

deˈcussion Obs. rare.
  [ad. L. dēcussiōn-em, n. of action f. dēcutĕre to shake down, beat down, etc., f. de- I. 1 + quatĕre to shake.]
  A shaking down or off.

1664 Evelyn Pomona (1729) 94 Making a Quantity of Cider with Windfalls, which he let ripen in the Hoard, near a month interceding between the time of their Decussion, and that which Nature intended for their Maturity. 1674 Blount Glossogr., Decussion, a striking or shaking off; a beating down.

Oxford English Dictionary

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