Artificial intelligent assistant

gnacche

ˈgnacche, v. Obs. rare.
  [Prob. an onomatopœia suggested by gnaw; cf. snatch.]
  intr. = gnash v. 1. Hence ˈgnacching vbl. n. Also ˈgnaccher, one who gnashes.

13.. Sat. Blacksmiths in Rel. Ant. I. 240 Thei gnauen and gnacchen, they gronys to-gydere, And holdyn hem hote with here hard hamers. c 1490 Promp. Parv. 200/2 (MS. K.) Gnastere (K. gnachar), fremitor. Gnastyn (K. gnachyn), fremo. Gnastynge (K. gnachynge), fremitus.

Oxford English Dictionary

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