Artificial intelligent assistant

choffer

choffer Sc.
  (ˈtʃɒfə(r))
  [By-form of chafer, chauffer, ad. mod.F. chauffoir, f. chauffer to heat.]
  A small portable furnace, or chafing dish.

1756 M. Calderwood Journ. (1884) 130 His tea-kettle boiling on a choffer. 1860–8 Chambers Encycl. s.v. Balloon, Heated by an iron choffer. 1885 R. Christison Autobiog. I. ii. 60 We proceeded to kindle our choffer.

Oxford English Dictionary

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