[Meaning] a kitchen-knife.[1] And [there is] a saying: 'I will not stand like a lioness on a cheese-grater'.[2] Meaning in the manner of a lioness. This is a shameful [sexual] position used by courtesans. A cheese-grater is a kitchen-knife. On the handles of kitchen-knives ivory lions used to be carved, squatting, so that their feet would not break off [as they might] if they were carved standing up. So he is saying: I will not be a whore in positioning myself for a man, like a lioness on a cheese-grater.