A creature, a wild beast.
And Aristophanes [writes]: "I will not stand like a lioness on a cheesegrater". Meaning in the manner of a lioness. It is a shameful [sexual] position used by courtesans. A cheesegrater is a kitchen-knife. On the handles of kitchen-knives ivory lions used to be carved. So he is saying: I will not assume the position of a whore for a man, like a lioness on a cheesegrater. The lions were [depicted] crouching, so that they would not break off.