curtain

Definition:

In the Bible, the term "curtain" refers to a very thick, heavy piece of material used in the making of the tabernacle and the temple.

The tabernacle was built using four layers of curtains for the top and sides. These curtain coverings were made of cloth or animal skins.
Cloth curtains were also used to form a wall surrounding the tabernacle courtyard. These curtains were made out of "linen" which was a kind of cloth made out of the flax plant.
In both the tabernacle and temple building, a thick cloth curtain hung between the holy place and the most holy place. It was this curtain that was miraculously torn into two parts when Jesus died.

Since modern-day curtains are very different from the curtains used in the Bible, it may be more clear to use a different word or to add words that describe the curtains.
Depending on the context, ways to translate this term could include, "curtain covering" or "covering" or "piece of thick cloth" or "animal skin covering" or "hanging piece of cloth."