How Do You Pronounce Balistraria?

noun, plural bal·is·tra·ri·ae [bal-uh-strair-ee-ee].

What is a Balistraria?

: a narrow often cruciform opening in a wall (such as a tower or fortress) for discharging arrows (as from a crossbow)

What is the top of the castle wall called?

In architecture, a battlement is a structure on top of castle or fortress walls that protects from attack. Historically, battlements were usually narrow walls at the top of the outermost walls of a castle. Battlements have several important parts. The short, topmost part of the wall was called the parapet.