Definitions of percolate:

• noun:   the product of percolation
• verb:   spread gradually

  Example: "Light percolated into our house in the morning"

• verb:   pass through
• verb:   cause (a solvent) to pass through a permeable substance in order to extract a soluble constituent
• verb:   prepare in a percolator

  Example: "Percolate coffee"

• verb:   permeate or penetrate gradually
• verb:   gain or regain energy