What is a paraphet?

Answer 1

I guess you mean "parapet", which is an English word derived from Italian para, guard and petta, the chest. A parapet is the thinner wooden or stone wall which protects soldiers on top of the wall-walk along the top of a castle or fort wall. In later times the term parados referred to a second thin wall at the back of this wall-walk, protecting the soldier's backs.

Castle prapets are usually crenelated (or castellated), having battlements with spaces between for soldiers to shoot bows or crossbows.

In a trench system the parapet is often composed of earth and sandbags forming a low bank along the front top edge of the trench.