More generally, material wealth. But honestly, every dragon's got a hoard of something, right? Right?
Wyrm's site notes, “Your hoard can be anything, not just gold and jewels!” So when you consider my hoard specifically through the lens of books, I'm actually pretty well off.
Governments quake when they hear you're going to sell!
You really can't tell when someone steals an item!
You're comfortable, but you wouldn't mind some more.
You're not down to your last copper, but…
You've got your own lair, unfurnished.
You and the bank own your lair.
The lair is rented, and cramped.
No money, no lair, at least you aren't starving!
Look on the bright side. At least you've got friends!