1. Holyrood Palace: This is the official residence of the monarch in Scotland. It is located in Edinburgh, and its name comes from the Holy Rood, a piece of the True Cross (the cross on which Jesus Christ was crucified) that was brought to Scotland by Queen Margaret in the 11th century.
2. The Holyrood Abbey: This was a medieval abbey built next to the palace, founded in 1128 by David I of Scotland. The abbey itself is no longer standing, but its ruins still exist, and the name "Holyrood" is still used to refer to the area around the palace.
3. The Holyrood Parliament: This refers to the Scottish Parliament, which meets in the Holyrood Palace. While the Parliament building is a modern structure built in 1999, it is still considered to be located in the Holyrood area.
4. Holyrood as a general term: Sometimes, "Holyrood" is used as a general term to refer to Edinburgh, Scotland. This usage is not as common as the other meanings, but it is still used occasionally.
It's important to consider the context of the word "Holyrood" to understand its meaning.