Blatherskite is a noun that may refer to foolish talk, or it may refer to a person who engages in foolish talk.

Coming from the mid-17th century, our word of the day was first used in the Scottish song Maggie Lauder. It soon became popular among Americans as well as Brits. Example:

There was a lot of blatherskite spoken at the party, but perhaps the most foolish thing said was that we needed another beer run. Believe me, at that hour, we’d already had enough beer.