- a thing that percolates
- a kind of coffeepot in which the boiling water bubbles up through a tube and filters, through the ground coffee held in a perforated container, back to the bottom of the pot
See percolator in American Heritage Dictionary 4
A coffeepot in which boiling water is forced repeatedly up through a central tube to filter back down through a basket of ground coffee beans.
Learn more about percolator