肉-49 啃 (动) ① gnaw; nibble ② take great pains with one’s studies

啃   啃是会意字，也是形声字。口为形符；肯亦声亦义。肯是啃之初文。《说文》注：“啮也。从口，肯声。”啃义为用牙齿啮咬。借指啃硬骨头、啃书本等。

啃 (动) ① gnaw; nibble ② take great pains with one’s studies