I'm wondering what is the correct term for/great way to describe the upper portion of a bunk bed. The shorter the better. Thank you.
If the bunk beds are on a ship or a train (or other vehicle), they are also called the top/upper berth.
If the bunk beds are on a ship and it's a modern military setting, we Navy call them "Racks": Top rack, middle rack, bottom rack. Either way it looks like your description of the top bed of a bunk set is going to be two words long... Unless there's someone who knows the one-word definition for "Top bunk"...?
Second that, think its a Brit thing but we all call it a top bunk...obviously the one underneath is the bottom bunk
That is actually relevant to my book. I was calling them top and bottom bunks without really thinking about that. Gotta change it. What do you call roommates in this setting?