What is a "Tuffet," Exactly?

This is a plush, machine washable, fabric squeaky toy from Fisher Price featuring Little Miss Muffet.

Little Miss Muffet
Sat on a tuffet
Eating her curds and whey.
Along came a spider
Who sat down beside her
And frightened Miss Muffet away.

The verse first appeared in print in 1805 in a book called Songs for the Nursery

Fisher Price, 1977