語出《詩·召南·行露》：“誰謂雀無角，何以穿我屋……誰謂鼠無牙，何以穿我墉?！?a href="/hycd/q/q205242.htm" target="_blank">雀鼠角牙，用以啄嚙。后因以“角牙”比喻讒陷別人的手段?！?a href="/hycd/x/x207093.htm" target="_blank">新唐書·朱敬則傳》：“去萋斐之角牙，頓姦險(xiǎn)之芒刃，塞羅織之妄源，掃朋黨之險(xiǎn)跡?！?/p>