| 释义 |
‖ boyau|ˈbɔɪəʊ|
Also boyeau.
[F. boyau ‘the alimentary canal’, and as below:—OF. boel: see bowel.]
Fortif. ‘A branch of a trench; a zig-zag; a trench in rear of a battery, forming a communication with the magazine; a small gallery of a mine.’ Stocqueler Milit. Encycl. 1853.
1847in Craig. 1862F. Griffiths Artil. Man. (ed. 9) 263 Zig-zags, or Boyeaux of communication, are trenches made for the approaches from the parallels to the besieged place. |