percolate
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percolate through (something)
To pass through something that is not entirely solid, such as a mesh or porous material. The wind ripped the shingles off the roof, allowing the rain to percolate through it.
percolate through something
[for a liquid] to seep down through something. The water percolated through the coffee grounds too slowly for Fred, who was just dying for a hot cup of the stuff. The water percolated through the subsoil and appeared again at the bottom of the hill.