(transitive, obsolete) To set abroach; to let out, as liquor; to broach; to tap.
adverb
(obsolete) Broached; in a condition for letting out or yielding liquor, as a cask which is tapped.
1709, Joseph Addison, The Tatler, No. 146, 16 March, 1709, Glasgow: Robert Urie, 1754, p. 115,
Jupiter, in the beginning of his reign, finding the world much more innocent than it is in this iron age, poured very plentifully out of the tun that stood at his right hand; but as mankind degenerated, and became unworthy of his blessings, he set abroach the other vessel, that filled the world with pain and poverty […]
(obsolete) In a state to be diffused or propagated.
1761, George Colman, The Genius, No. 6, 20 August, 1761, in Prose on Several Occasions, London: T. Cadel, 1787, Volume 1, p. 64,
When a person of high rank is destined for the victim, an emissary is dispatched to set the story abroach at some obscure coffee-house in the city, whence it speedily marches to its head quarters near the court: