pussums means A term of endearment for a cat.
Etymology
From puss + -ums.
noun
- A term of endearment for a cat.“And they surged round Aslan jeering at him, saying things like "Puss, Puss! Poor Pussy," and "How many mice have you caught to-day, Cat?" and "Would you like a saucer of milk, Pussums?"”