noun
pinking shears
Scissors with serrated blades used to cut fabric in a zigzag pattern to prevent fraying.
布の端をピンキング鋏で切ると、ほつれにくくなります。
If you cut the edge of the fabric with pinking shears, it becomes less likely to fray.
裁ち鋏 are general fabric scissors, while ピンキング鋏 specifically have a zigzag blade for pinking.
From English 'pinking shears', with 鋏 (scissors) added as a Japanese element.