The New York Stock Exchange started out as a coffee house.
hornstones
plural of hornstone
Source: Wiktionary
Horn"stone`, n. (Min.)
Definition: A siliceous stone, a variety of quartz, closely resembling flint, but more brittle; -- called also chert.
Source: Webster’s Unabridged Dictionary 1913 Edition
2 April 2025
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
The New York Stock Exchange started out as a coffee house.