Wash up:

To clean ink from rollers, fountains, an other components of a press.

Washup:

Removing printing ink from a press, washing the rollers and blanket. Certain ink colors require multiple washups to avoid ink and chemical contamination.

Waste:

A term for expected spoilage.

Water fountain:

Reservoir on a press that holds fountain solution.

Watermark:

Distinctive design created in paper during manufacture.

Web:

A roll of printing paper.

Web Fed:

A printing press with paper supplied by a web rather than single sheets.

Web break:

Break in paper running through a web press, causing production to stop.

Web press:

A printing press that prints from rolls of paper. Compare with sheetfed press.

Weight:

The physical weight of a paper, generally judged in basis weight.