Artificial intelligent assistant

field-preacher

ˌfield-ˈpreacher
  [f. field n. + preacher.]
  One who preaches in the open air.

1688 in Ellis Orig. Lett. Ser. ii. IV. 148 Balfour..is a Scotch field-preacher. 1755 Connoisseur No. 86 The spirited harangues of our..field-preachers. 1839 Stonehouse Axholme 209 He [Wesley] commenced field preacher; and itinerancy followed as a natural consequence.

Oxford English Dictionary

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