Han ideograph 𪙓

𪙓 is a historical variant of 齧, a Chinese character whose Mandarin reading is niè and whose meaning is “bite” or “gnaw.” The 997 CE Longkan Shoujian dictionary lists it as the same character. Shuowen Jiezi, an earlier dictionary, gives 齧 the biting sense; classical texts also use it for erosion or a notch. In an old text, let context tell you whether teeth are involved.