没牙啃

没牙啃

Literally means:

with no teeth to gnaw

Actually means:

with no way to handle

啃 means gnawing something off piece by piece with teeth. This phrase is the abbreviated form of 没牙啃不动, meaning one cannot gnaw at hard things if his teeth are not in good conditions or if he has no teeth.

It figuratively means one has no way to handle something. It may be used to refer to somebody or something.

啃，用牙齿把坚硬的东西一点儿一点儿咬下来。这是“没牙啃不动”的简略形式（牙齿不好或没有牙就啃不了硬东西）。

没牙啃，比喻没有办法对付。适用于人或事。