Medieval Fortification

Space between the inner and outer walls and pl...Image via Wikipedia

An external Pomoerium, stripped of bushes and building, gave defenders a clear view of what was happening outside and an unobstructed field of shot. An internal pomoerium gave ready access to the rear of the curtain wall to facilitate movement of the garrison to a point of need. By the end of the sixteenth century, the word had developed further in common use, into pomery.
All right, that's two words in one page that I have just never seen before.
Turnul Chindiei

Fortifications of Oradea
Early Pentagon