I think, like Sue said before, that most of us think of "home" as shelter.
I'd like to offer up a few of my sketches as definitions of "shelter" (after the fact,of course!).
A friend of mine is a professional photographer.
He says that his camera offers him shelter.
He can move behind the camera and hide himself from the crowd.
I was recently working in a "satellite studio", trying to avoid , um, I mean get some work done while away from home.
I wound up drawing almost everything in the room instead of doing what I was supposed to be doing.
It offered me shelter from the "real" work of the day.
I drew an image from a magazine (which had no photographer listed).
Can you imagine how many small animals this offered shelter to when it was still sitting on the ground?
Refuge (or protection) now has many definitions in my mind.
What about you?
Are you using your sketchbook to think about the word "shelter"?