[ˈtɪmpən], (Noun)

Definitions:
- (in letterpress printing) a layer of packing, typically of paper, placed between the platen and the paper to be printed to equalize the pressure over the whole forme



Phrases:

Origin:
late 16th century (in tympan): from French tympan or Latin tympanum (see tympanum). tympan dates from the early 18th century