Definition of "creaser" []

• A tool or attachment for making creases or guidelines. (noun)

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• "With the right side down, fold all the flaps in towards the middle, and crease using your popsicle stick or paper creaser(sometimes these are called “bone folders” though they are generally made from plastic nowadays). glue the large side flap over the top of the folded in bottom (the tapered end is the top) and opposite side flap."
• "What the sub deputy chief waistcoat creaser will say if he reads these words I shudder to think."
• "Leading UK finishing equipment supplier, Total PFS, is introducing a new digital creaser to the UK market which it claims will provide print finishers with the most cost-effective option for high-quality off-line digital creasing available in the market."