一切經音義 5.295

5.295

危脆（筌歲反考聲云脆弱也偄也肉肥也或從毳作膬亦通也毳出稅反）。

危脆 (fanqie: 筌歲反 [cuì]. The Kaosheng says: "脆 means fragile; weak; tender meat." It is also written with the radical 毳 as 膬 (where 毳 has the fanqie 出稅反 [cuì]), which is also acceptable).