Artificial intelligent assistant

tin-tack

ˈtin-ˈtack
  a. A tack, or short light iron nail, coated with tin.

1839 Dickens Nich. Nick. xxxv. 346 A..parcel of tin tacks and a very large hammer. 1840Old C. Shop xxviii, Mrs. Jarley served out the tin tacks from a linen pocket. 1887 G. R. Sims Mary Jane's Mem. vii. 91 He had trodden on a tin-tack on the carpet, point up.

  b. Colloq. phr. to come (or get) down to tin tacks = to come (or get) down to brass tacks s.v. brass n. 5 b. (Found only in the work of G. B. Shaw.)

1921 G. B. Shaw Pen Portraits (1932) 183 Keats..had he lived, would no doubt have come down from Hyperions and Endymions to tin tacks as a very full-blooded modern revolutionist. 1949Buoyant Billions (1950) iii. 45 Do let us get back to tin tacks. Is Clemmy going to marry him or is she not?

Oxford English Dictionary

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