im trying to figure out what a silo is and i have no idea
If you have access to the Internet, you have access to dictionaries and encyclopedias.
A silo is a large building used to hold grain, wheat, or other kinds of crops. Here's a link to a page with some pictures:
A silo is typically an airtight cylindrical storage area, usually used for feed but can be used for anything. You'll usually hear it in reference to grain, feed, or missiles.