noun

A blueprint is like a map. It shows you what something will look like when it is built. For example, if someone wanted to build a house, they would use a blueprint to see what it will look like when it is finished.

example

1.  I used a blueprint to create a detailed plan for my project.
2.  The architect presented a blueprint of the new building to the city council.
3. We followed the blueprint for the renovation of the house.