Artificial intelligent assistant

butter-tooth

ˈbutter-tooth Obs.
  [f. butter n.1 + tooth: cf. Du. boter-tand ‘an incisor tooth, esp. when broad and large’ (Bomhoff). The reason for the name is uncertain.]
  Originally perh. a front tooth; later app. = buck-tooth.

1571 R. Edwards Damon & P. in Dodsl. IV. 79 Father, you have good butter-teeth full seen. 1622 Massinger Old Law iii. ii, I'd had..my two butter-teeth Thrust down my throat. 1736 Bailey, Butter-Teeth, great, broad Foreteeth. 1782 A. Monro Anat. 121 Whence come butter or buck teeth?

  Hence ˈbutter-toothed ppl. a.

1688 R. Holme Armoury ii. 427/1 Butter Toothed is to have broad and great teeth before.

Oxford English Dictionary

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