drainage: Meaning and Definition of

drain•age

Pronunciation: (drā'nij), [key]
— n.
  1. the act or process of draining.
  2. a system of drains, artificial or natural.
  3. See
  4. something that is drained off.
  5. the drainage of fluids, as bile, urine, etc., from the body, or of pus and other diseased products from a wound.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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