[Kory]

A mudroom is like.. a room where you put all of your heavy winter stuff.
My parents had one in our house and it was like, a room that you walked into first, there was a closet and there was a little built-n seat/storage box where you places wet boots.

I've seen some mudrooms with cubbies instead of closets.
My best friend had a house with cubbies in the mudroom.

I don't think I've ever seen a house without one until I moved here.