foolscap
/ˈfuːlzkæp/noun
mass noun
1- Brit. a size of paper, about 330 × 200 (or 400) mm〈英〉大裁（纸张规格, 尺寸约330 × 200 ［或400］毫米）。
1.1
- paper of this size大页书写纸：
several sheets of foolscap.
几张大页书写纸。
词源
late 17th cent.: said to be named from a former watermark representing a fool's cap.