newscast (n.)

late 14c., "new things," plural of new (n.) "new thing" (see new (adj.)); after French nouvelles, which was used in Bible translations to render Medieval Latin nova (neuter plural) "news," literally "new things."

The English word was construed as singular at least from the 1560s, but it sometimes still was regarded as plural 17c.-19c. The odd and doubtful construction probably accounts for the  absurd folk-etymology (attested by 1640 but originally, and in 18c. usually, in jest-books) that claims it to be an abbreviation of north east south west, as though "information from all quarters of the compass."

Meaning "tidings, intelligence of something that has lately taken place" is from early 15c. Meaning "radio or television program presenting current events" is from 1923. Bad news in the extended sense of "unpleasant person or situation" is from 1926. Expression no news, good news can be traced to 1640s. Expression news to me "something I did not know" is from 1889.

News-agent "person who deals in newspapers" is from 1817. News-hound "reporter" is by 1908. The newspaper office news desk is by 1840. News-monger "one who employs much time in hearing and telling news" is from 1590s. The News in the Virginia city Newport News is said to derive from the name of one of its founders, William Newce.

1767, "dispersed upon the ground by hand," in reference to seed, from broad (adj.) + past participle of cast (v.). The figurative sense of "widely spread" is recorded by 1785. As an adverb from 1832. The modern media use began with radio (1922, adjective and noun). As a verb, recorded from 1813 in an agricultural sense, 1829 in a figurative sense, 1921 in reference to radio.