palisade

Grendel means, originally, no more than a bar or rod, or a palisade or lattice-work made of such bars or rods.

Many of these round houses were built close together, and then surrounded by a palisade made of tree trunks.

The next type is found in the monastery of St. Bride, which was simply a circular palisade encircling a sacred fire.

It seems that the citadel of Athens had been formerly surrounded by a wooden palisade.

But what she saw in the cheerful June sky beyond the palisade made her body go clammy-cold with horror.