Crossword Genius

One of 390 billion in the Amazon rainforest (4)

Ross

I believe the answer is:

tree

(Other definitions for tree that I've seen before include "Oak, say" , "Tall wooden plant" , "Large plant with trunk" , "cross" , "Theme" .)

I've seen this clue in the Universal.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.