Correct
仄声
/ zèshēng /
Strokes
Definition
oblique tone/nonlevel tone/uneven tone (the third tone of Classical Chinese)
Example
As a Noun
oblique tones ［i.e. the falling-rising tone（上声）, the falling tone（去声）and the entering tone（入声）, as distinct from the level tone（平声）in classical Chinese pronunciation］