From The Collaborative International Dictionary of English v.0.44 [gcide]:
2. A type of coffee pot in which the heated water is driven by its boiling action up above a porous canister of coffee held above the level of the water in the pot, and then filters (percolates) back through the coffee thus extracting its essence. [Webster 1913 Suppl. +PJC]
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
19 Moby Thesaurus words for "percolator": clarifier, colander, cradle, cribble, filter, lixiviator, purifier, refiner, refinery, riddle, rocker, screen, sieve, sifter, strainer, winnow, winnowing basket, winnowing fan, winnowing machine
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