Boyaux (Fr., 'bowels') are the zigzag approaches used in siege operations to connect the parallels. See SIEGE.
Boyaux
Chambers's Encyclopaedia, Volume 2: Beaugency to Cataract, p. 376
Source scan(s): p. 0387
Boyaux (Fr., 'bowels') are the zigzag approaches used in siege operations to connect the parallels. See SIEGE.