Definitions

1. noun

a type of modeling material, typically a mixture of green-colored wax or putty, used in miniature wargaming and other hobbies.

“The wargamer used greenstuff to create detailed miniatures for her tabletop game.”

2. noun

a green-colored substance or material, especially in a vague or general sense.

“The garden was covered in a thick layer of greenstuff after the heavy rainfall.”