一切經音義 56.337

56.337

皆杜（說文作庶同徒古反國語杜門不出賈逵曰杜塞也塞閉也方言杜歰也趙曰杜郭璞曰今俗通語也歰如杜杜子歰因以名也）。

All stopped up 皆杜 (The Shuowen jiezi writes 庶, identical, with the fanqie tu + gu. The Guoyu has: 'Shut the gates and did not go out.' Jia Kui says: '杜 means to block up; to obstruct and close.' The Fangyan says: '杜 means astringent or blocked.' Zhao says: '杜.' Guo Pu says: 'This is common vernacular today; astringency is like a wild pear (du), and the wild pear fruit is astringent, hence it is so named').