"informal session of folk musicians," 1940, American English, earlier "a gadget" (1927), of unknown origin, perhaps a nonsense word.
Another device used by the professional car thief, and one recently developed to perfection, according to a large Chicago lock-testing laboratory, is a "hootenanny," so-called by the criminals using it. [Popular Mechanics, February 1931]
of medicines, "kept in stock by a druggist," 1660s, from French officinal, from Medieval Latin officinalis, literally "of or belonging in an officina," a storeroom (of a monastery) for medicines and necessaries, in classical Latin "workshop, manufactory, laboratory," contraction of *opificina, from opifex (genitive opificis) "worker, workman, maker, doer" (from opus "work," from PIE root *op- "to work, produce in abundance") + -fex, -ficis "maker, one who does," from facere "to do, make" (from PIE root *dhe- "to set, put"). Related: Officinally.
city in California, named c. 1866 for George Berkeley (1685-1753), Bishop of Cloyne, who denied the objective reality of the material world. The college there opened in 1873. The surname (also Barclay) is the birch-tree wood or clearing. The transuranic element berkelium (1950) is named for the laboratory there, where it was discovered. It does not occur naturally.
Whether they knew or not
Goldsmith and Burke, Swift and the Bishop of Cloyne
All hated Whiggery; but what is Whiggery?
A levelling, rancorous, rational sort of mind
That never looked out of the eye of a saint
Or out of drunkard's eye.
[Yeats, from "The Seven Sages"]
1935, as visual equivalent of audio, from Latin video "I see," first person singular present indicative of videre "to see" (see vision). As a noun, "that which is displayed on a (television) screen," 1937.
Engineers, however, remember the sad fate of television's first debut and are not willing to allow "video transmission" (as television is now called by moderns) to leave the laboratory until they are sure it will be accepted. [The Michigan Technic, November 1937]
video game is from 1973.