Dictionary.net

• Sweeping; grazing; - applied to a style of fortification in which the command of the works over each other, and over the country, is kept very low, in order that the shot may more effectually sweep or graze the ground before them.

2010 - New Age Dictionary Database
By Oddity Software

• Sweeping; grazing; - applied to a style of fortification in which the command of the works over each other, and over the country, is kept very low, in order that the shot may more effectually sweep or graze the ground before them.

1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.