| A ravelin is a V shaped fortification used to protect the entrance of a fort. |
| An old form of outwork somewhat similar to the ravelin, originally placed before the salients of bastions. |
| First, a rectangular earth enceinte with bastions at the corners was built, along with fosse, redan and ravelin. |
| The main gate was protected from direct attack by a stone structure called a ravelin. |
| Madam, we require your presence on the north-western ravelin immediately. |
| A tremendous onset was made upon the gate of the Cross, and the ravelin was carried at last. |
