Dictionary
ma•chic•o•la•tion
Pronunciation: (mu-chik"u-lā'shun), [key]—
n. Archit.
1. an opening in the floor between the corbels of a projecting gallery or parapet, as on a wall or in the vault of a passage, through which missiles, molten lead, etc., might be cast upon an enemy beneath.
2. a projecting gallery or parapet with such openings.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.