foolscap

名词 foolscap:

1. a size of paper used especially in Britain

fools.cap

n.（名词）
Abbr. fcp.,fcap.,fp.Chiefly British A sheet of writing or printing paper measuring approximately 3 by ' inches.
缩写 fcp.,fcap.,fp.【多用于英国】 大页书写纸：一张写字或打印的纸，尺寸大约为3×'英寸
A fool`s cap.
小丑帽

来源：
[From the watermark of a fool`s cap with bells originally used for this paper]
[由最初用这种纸做的上带铃铛的小丑帽的水印图案而来]