Definitions

a statement by a judge or lawyer to a jury in a court legal action that gives the main facts that have been provided, in order to help the jury decide if someone is guilty or not:

Not wearing a mask.

to open something that has been folded or make something flat, so it covers a larger area :

to not use one thing and use something else instead:

an area of knowledge that is studied in school, college, or university:

If a surface is rutted, it has deep narrow marks in it made by wheels: