sapwood (noun)

1. In the futuristic world of his science fiction novel, the sapwood of trees is used as a renewable energy source.

2. The author vividly described the intricate patterns and colors of the sapwood in her poetic piece of literature.

3. In the comic book series, the superhero's weapon was a staff made from the enchanted sapwood of an ancient tree.

4. Within the mystical realm of the fantasy novel, the sapwood possessed magical healing properties when used in potions and spells.