def•e•catePronunciation: (def'i-kāt"), [key]
—v., -cat•ed, -cat•ing.
to void excrement from the bowels through the anus; have a bowel movement.
to become clear of dregs, impurities, etc.
to clear of dregs, impurities, etc.; purify; refine.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.