出典:Wiktionary

From Middle English pirewinkes (“instrument of torture for squeezing the thumbs, thumbscrew”) [and other forms];[1] further origin unknown. It has been suggested that the word is a variant of Middle English pervink, pervinke (“periwinkle (plant; Vinca minor または Vinca major); (比喩的に) evil man”),[1][2] but the Oxford English Dictionary doubts this due to the difference in meaning.[3] Compare Swedish pille-, related to pilla (“fiddle with the fingers”).
pilliwinks pl (複数形 only)