Definition:

: voluble nonsensical or inconsequential talk or writing; blather

Example:

"Now this FHT [website] is pure bosh and blatherskite, so tell your spouse to keep his inheritance dry though I'm certain I'd be wasting time telling you that FHT's boldly advertised results are impossible." – Malcolm Berko, Lake County News-Sun, December 10, 2012

About the Word:

Blatherskite has a Scottish pedigree, and originated as an alteration of blather skate – skate being a Scottish term for a contemptible person. The first blatherskite was a blustering and often incompetent person.