Meaning of gabion

ga•bi•on

Pronunciation: (gā'bē-un), [key]
— n.
  1. a cylinder of wickerwork filled with earth, used as a military defense.
  2. a metal cylinder filled with stones and sunk in water, used in laying the foundations of a dam or jetty.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.