What does "fraise" mean?

Fraise: (Fort.) A defense consisting of pointed stakes driven into the ramparts in a horizontal or inclined position.

Additional senses

  1. 2.(Mech.) A fluted reamer for enlarging holes in stone; a small milling cutter.
  2. 3.To protect, as a line of troops, against an onset of cavalry, by opposing bayonets raised obliquely forward. Wilhelm.

Sources