E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
The light frame of the printing-press, which folds down upon the tympan (q.v.) over the sheet of paper to be printed. Its object is two-foldto hold the sheet in its place and to keep the margins clean. It is called frisket because it frisks or skips up and down very rapidlyi.e. the pressman opens it and shuts it over with great alacrity, the movement being called flying the frisket.