prolocution

From pro +‎ locution.

prolocution (plural prolocutions)

(obsolete) An introductory speech.
- 1886 May 1 – July 31, Robert Louis Stevenson, Kidnapped, being Memoirs of the Adventures of David Balfour in the Year 1751: […], London; Paris: Cassell & Company, published 1886, →OCLC:
  “Sir,” said I, “if I tell you my story, I must commit a friend’s life to your discretion. Pass me your word it shall be sacred; and for what touches myself, I will ask no better guarantee than just your face.”
  He passed me his word very seriously. “But,” said he, “these are rather alarming prolocutions; and if there are in your story any little jostles to the law, I would beg you to bear in mind that I am a lawyer, and pass lightly.”
(obsolete) Speaking on behalf of others.

English