Senses
啮齿/ 嚙齒 rodent
a rodent; pertaining to the order Rodentia (gnawing mammals)
啮齿/ 嚙齒 to gnaw
to gnaw; to bite with the teeth like a rodent
啮齿/ 嚙齒 to gnash one's teeth
(literary) to gnash one's teeth as a sign of extreme anger; used in the same way as 咬牙切齿