What Does the Word Flong Mean?

: a sheet (as of several layers of tissue paper superposed on a sheet of heavier paper) used for making a stereotype matrix.

Is flong a word?

Yes, flong is in the scrabble dictionary.

What is a flong in printing?

In printing: Preparing stereotypes and plates. In making stereotype plates, a flong, or mat, a thin sheet of pasteboard, pliant enough to register an impression and sufficiently heat-resistant to tolerate the molten type metal, is placed on the type form with paper and cotton packing.